18612900988

Names of 18612900988

• Cardinal: 18612900988 can be written as Eighteen billion, six hundred twelve million, nine hundred thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 1.8612900988 × 10¹⁰

Factors of 18612900988

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4199

Divisors of 18612900988

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 11 22 29 44 58 116 121 242 319 484 638 841 1276 1331 1682 2662 3364 3509 4157 5324 7018 8314 9251 14036 16628 18502 37004 38599 45727 77198 91454 101761 120553 154396 182908 203522 241106 407044 482212 502997 1005994 1119371 1326083 2011988 2238742 2652166 3496037 4477484 5304332 5532967 6992074 11065934 13984148 14586913 22131868 29173826 38456407 58347652 76912814 153825628 160456043 320912086 423020477 641824172 846040954 1692081908 4653225247 9306450494 18612900988
• Sum of all divisors σ(n): 37114341264
• Sum of proper divisors (its aliquot sum) s(n): 18501440276
• 18612900988 is a deficient number, because the sum of its proper divisors (18501440276) is less than itself. Its deficiency is 111460712

Bases of 18612900988

• Binary: 10001010101011010100101010001111100₂
• Hexadecimal: 0x4556A547C
• Base-36: 8JTN2BG

Squares and roots of 18612900988

• 18612900988 squared (18612900988²) is 346440083189091376144
• 18612900988 cubed (18612900988³) is 6448254966673041065852937230272
• The square root of 18612900988 is 136429.1060881071
• The cube root of 18612900988 is 2650.1554904847

Scales and comparisons

• 18,612,900,988 seconds is equal to 591 years, 43 weeks, 2 days, 2 hours, 16 minutes, 28 seconds.
• To count from 1 to 18,612,900,988 would take you about one thousand, one hundred eighty-three 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 18612900988 cubic inches would be around 220.8 feet tall.

Recreational maths with 18612900988

• 18612900988 backwards is 88900921681
• The number of decimal digits it has is: 11
• The sum of 18612900988's digits is 52
• More coming soon!