Numbers 1,800,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

1,000,000,0001,100,000,0001,200,000,0001,300,000,0001,400,000,000

1,500,000,0001,600,000,0001,700,000,0001,800,000,000 – 1,900,000,000

All Numbers[1B] – [2B] – [3B] – [4B] – [5B] – [6B] – [7B] – [8B]  – [9B]  & [10B]

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

1,805,060,196

[Math.]   Sum of the first 291 cube numbers:

13+…+2913 = 1,805,060,196 = (1+2+…+291)2 = 42,4862.

 

1,827,049,536

[Math.]   427442 = 1827049536, a square number using each of 10 digits 0-9 once. (The 14th of 87 such numbers).

 

1,829,957,284

[Math.]   Sum of the first 292 cube numbers:

13+…+2923 = 1,829,957,284 = (1+2+…+292)2 = 42,7782.

  

1,836,036,801

[Math.]  2074 = 1,836,036,801, where 18360 and 36801 are mutual permutations.

 

1,836,311,903

[Math.]   The 46th Fibonacci number.

 

1,855,111,041

[Math.]   Sum of the first 293 cube numbers:

13+…+2933 = 1,855,111,041 = (1+2+…+293)2 = 43,0712.

 

1,880,523,225

[Math.]   Sum of the first 294 cube numbers:

13+…+2943 = 1,880,523,225 = (1+2+…+294)2 = 43,3652.

 

x,yzw,abc,def

[Math.]  For any x,yzw = 1000 to 9999, there are always six 6-digit numbers abc,edf such that x,yzw +abc,def is equal to one of 6 digit-rotations of 142,857 and the number x,yzw,abc,def is a multiple of 142,857.

 

 For any x,yzw = 1000 to 9999, there are always twelve 6-digit numbers abc,edf such that x,yzw +abc,def is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number x,yzw,abc,def is a multiple of 76,923.