18512137998

Names of 18512137998

• Cardinal: 18512137998 can be written as Eighteen billion, five hundred twelve million, one hundred thirty-seven thousand, nine hundred ninety-eight.

Scientific notation

• Scientific notation: 1.8512137998 × 10¹⁰

Factors of 18512137998

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 23159

Divisors of 18512137998

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 17 18 34 37 51 71 74 102 111 142 153 213 222 306 333 426 629 639 666 1207 1258 1278 1887 2414 2627 3621 3774 5254 5661 7242 7881 10863 11322 15762 21726 23029 23643 44659 46058 47286 69087 89318 133977 138174 207261 267954 391493 401931 414522 782986 803862 852073 1174479 1635059 1704146 2348958 2556219 3270118 3523437 4905177 5112438 7046874 7668657 9810354 14485241 14715531 15337314 27796003 28970482 29431062 43455723 55592006 60497183 83388009 86911446 120994366 130367169 166776018 181491549 250164027 260734338 362983098 500328054 544474647 1028452111 1088949294 2056904222 3085356333 6170712666 9256068999 18512137998
• Sum of all divisors σ(n): 44233076160
• Sum of proper divisors (its aliquot sum) s(n): 25720938162
• 18512137998 is an abundant number, because the sum of its proper divisors (25720938162) is greater than itself. Its abundance is 7208800164

Bases of 18512137998

• Binary: 10001001111011010001100111100001110₂
• Hexadecimal: 0x44F68CF0E
• Base-36: 8I5ND3I

Squares and roots of 18512137998

• 18512137998 squared (18512137998²) is 342699253256995448004
• 18512137998 cubed (18512137998³) is 6344095868105050692307881655992
• The square root of 18512137998 is 136059.3179389049
• The cube root of 18512137998 is 2645.3645316935

Scales and comparisons

• 18,512,137,998 seconds is equal to 588 years, 32 weeks, 4 days, 20 hours, 33 minutes, 18 seconds.
• To count from 1 to 18,512,137,998 would take you about one thousand, one hundred seventy-seven years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18512137998 cubic inches would be around 220.4 feet tall.

Recreational maths with 18512137998

• 18512137998 backwards is 89973121581
• The number of decimal digits it has is: 11
• The sum of 18512137998's digits is 54
• More coming soon!