18972084186377721

Names of 18972084186377721

• Cardinal: 18972084186377721 can be written as Eighteen quadrillion, nine hundred seventy-two trillion, eighty-four billion, one hundred eighty-six million, three hundred seventy-seven thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.8972084186377721 × 10¹⁶

Factors of 18972084186377721

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 18198

Divisors of 18972084186377721

• Number of divisors d(n): 135
• Complete list of divisors:
  1 3 7 9 19 21 49 57 63 133 147 171 361 399 441 931 1083 1197 2527 2793 3249 6859 7581 8379 17689 18169 20577 22743 48013 53067 54507 61731 127183 130321 144039 159201 163521 336091 345211 381549 390963 432117 890281 912247 1008273 1035633 1144647 1172889 2416477 2670843 2736741 3024819 3106899 6385729 6559009 7249431 8012529 8210223 16915339 19157187 19677027 21748293 45913063 50746017 57471561 59031081 124621171 137739189 152238051 321391441 330112561 373863513 413217567 872348197 964174323 990337683 1121590539 2310787927 2367802249 2617044591 2892522969 2971013049 6106437379 6272138659 6932363781 7103406747 7851133773 16175515489 16574615743 18319312137 18816415977 20797091343 21310220241 43904970613 48526546467 49723847229 54957936411 56449247931 116022310201 119170634521 131714911839 145579639401 149171541687 307334794291 348066930603 357511903563 395144735517 834194441647 922004382873 1044200791809 1072535710689 2264242055899 2502583324941 2766013148619 5839361091529 6792726167697 7507749974823 15849694391293 17518083274587 20378178503091 43020599062081 47549083173879 52554249823761 110947860739051 129061797186243 142647249521637 301144193434567 332843582217153 387185391558729 903432580303701 998530746651459 2108009354041969 2710297740911103 6324028062125907 18972084186377721
• Sum of all divisors σ(n): 33651117093934431
• Sum of proper divisors (its aliquot sum) s(n): 14679032907556710
• 18972084186377721 is a deficient number, because the sum of its proper divisors (14679032907556710) is less than itself. Its deficiency is 4293051278821011

Bases of 18972084186377721

• Binary: 1000011011001110000001010010010100100111110110111111001₂
• Hexadecimal: 0x4367029293EDF9
• Base-36: 56T1J5JVDO9

Squares and roots of 18972084186377721

• 18972084186377721 squared (18972084186377721²) is 359939978375003591817782885153841
• 18972084186377721 cubed (18972084186377721³) is 6828811571773544510591142400713645782421619976361
• 18972084186377721 is a perfect square number. Its square root is 137739189
• The cube root of 18972084186377721 is 266709.4155480561

Scales and comparisons

• 18,972,084,186,377,721 seconds is equal to 603,253,592 years, 32 weeks, 16 hours, 55 minutes, 21 seconds.
• To count from 1 to 18,972,084,186,377,721 would take you about one billion, eight hundred nine million, seven hundred sixty thousand, seven 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 18972084186377721 cubic inches would be around 22225.8 feet tall.

Recreational maths with 18972084186377721

• 18972084186377721 backwards is 12777368148027981
• The number of decimal digits it has is: 17
• The sum of 18972084186377721's digits is 81
• More coming soon!