Numbers 18,000,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

10,000,000,00011,000,000,00012,000,000,000 – 13,000,000,00014,000,000,000

15,000,000,00016,000,000,00017,000,000,00018,000,000,00019,000,000,000

– [1B] –  [10B] –  [20B] – [30B] – [40B] – [50B] – [60B] – [70B] – [80B] – [90B] & [100B]

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q ...

18,069,005,241

[Math.]  Sum of the first 518 cube numbers:

13+…+5183 = 18,069,005,241 = (1+…+518)2 = 134,4212

18,208,803,600

[Math.]  Sum of the first 519 cube numbers:

13+…+5193 = 18,208,803,600 = (1+…+519)2 = 134,9402.

18,212,890,625

[Math.]  An automorphic number, whose powers end with the number itself. It is extracted from a 17-digit automorphic number 56,259,918,212,890,625, which remains automorphic when dropping the left-most digits.

18,275,354,535

[Math.]  Two consecutive sums of consecutive square numbers:

18,275,354,535 = 145352+…+146202 = 146212+…+147052.

18,349,411,600

[Math.]  Sum of the first 520 cube numbers:

13+…+5203 = 18,349,411,600 = (1+…+520)2 = 135,4602.

18,490,832,361

[Math.]  Sum of the first 521 cube numbers:

13+…+5213 = 18,490,832,361 = (1+…+521)2 = 135,9812.

18,539,817,921

[Math.]  18,539,817,921 = (18+53+98+179+21)4 = 3694.

18,633,069,009

[Math.]  Sum of the first 522 cube numbers:

13+…+5223 = 18,633,069,009 = (1+…+522)2 = 136,5032.

18,776,124,676

[Math.]  Sum of the first 523 cube numbers:

13+…+5233 = 18,776,124,676 = (1+…+523)2 = 137,0262.

18,888,888,887

[Math.]

2,222,222,2223 = 10,973,936,896,570,644,719,122,085,048

and 109739368+9657064471+9122085048 = 18,888,888,887

8,888,888,8883 = 702,331,961,380,521,262,023,813,443,072

and 7023319613+8052126202+3813443072 = 18,888,888,887

and  1+8,888,888,887 = 8,888,888,888.

18,920,002,500

[Math.]  Sum of the first 524 cube numbers:

13+…+5243 = 18,776,124,676 = (1+…+524)2 = 137,5502.

xy,zwv,abc,def

[Math.]  For any xy,zwv = 10,000 to 99,999, there are always six 6-digit numbers abc,edf such that xy,zwv +abc,def is equal to one of 6 digit-rotations of 142,857 and the number xy,zwv,abc,def is a multiple of 142,857.

For any xy,zwv  = 10,000 to 76,922, there are always twelve 6-digit numbers abc,edf such that xy,zwv +abc,def is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,zwv,abc,def is a multiple of 76,923.