918681431769890

Names of 918681431769890

• Cardinal: 918681431769890 can be written as Nine hundred eighteen trillion, six hundred eighty-one billion, four hundred thirty-one million, seven hundred sixty-nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 9.1868143176989 × 10¹⁴

Factors of 918681431769890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8148

Divisors of 918681431769890

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 10 61 122 269 305 538 610 827 1163 1345 1654 2326 2690 4135 5815 5821 8270 11630 11642 16409 29105 32818 50447 58210 70943 82045 100894 141886 164090 222463 252235 312847 354715 355081 444926 504470 625694 709430 710162 961801 1112315 1564235 1565849 1775405 1923602 2224630 3128470 3131698 3550810 4809005 4813967 6769823 7829245 9618010 9627934 13539646 13570243 15658490 19083667 24069835 27140486 33849115 38167334 48139670 58669861 67698230 67851215 95418335 95516789 117339722 135702430 190836670 191033578 258724469 293349305 293651987 412959203 477583945 517448938 586698610 587303974 825918406 955167890 1293622345 1294957123 1468259935 1821082387 2064796015 2587244690 2589914246 2936519870 3642164774 4129592030 5598643621 6474785615 9105411935 11197287242 12949571230 15782192609 18210823870 27993218105 31564385218 55986436210 78910963045 78992384503 111086025607 157821926090 157984769006 222172051214 341517260881 394961922515 555430128035 683034521762 789923845030 1110860256070 1506035134049 1707586304405 3012070268098 3415172608810 7530175670245 15060351340490 91868143176989 183736286353978 459340715884945 918681431769890
• Sum of all divisors σ(n): 1690765887271680
• Sum of proper divisors (its aliquot sum) s(n): 772084455501790
• 918681431769890 is a deficient number, because the sum of its proper divisors (772084455501790) is less than itself. Its deficiency is 146596976268100

Bases of 918681431769890

• Binary: 11010000111000100100110000011001110000001100100010₂
• Hexadecimal: 0x3438930670322
• Base-36: 91N8F8TO2Q

Squares and roots of 918681431769890

• 918681431769890 squared (918681431769890²) is 843975573078775055417910612100
• 918681431769890 cubed (918681431769890³) is 775344687854822497596048551569809116249669000
• The square root of 918681431769890 is 30309758.0288904649
• The cube root of 918681431769890 is 97212.3957420375

Scales and comparisons

• 918,681,431,769,890 seconds is equal to 29,211,227 years, 44 weeks, 5 days, 18 hours, 44 minutes, 50 seconds.
• To count from 1 to 918,681,431,769,890 would take you about seventy-three million, twenty-eight thousand and sixty-nine 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 918681431769890 cubic inches would be around 8101 feet tall.

Recreational maths with 918681431769890

• 918681431769890 backwards is 098967134186819
• The number of decimal digits it has is: 15
• The sum of 918681431769890's digits is 80
• More coming soon!