18491990540038007391125

Names of 18491990540038007391125

• Cardinal: 18491990540038007391125 can be written as Eighteen sextillion, four hundred ninety-one quintillion, nine hundred ninety quadrillion, five hundred forty trillion, thirty-eight billion, seven million, three hundred ninety-one thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 1.8491990540038007391125 × 10²²

Factors of 18491990540038007391125

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 19935

Divisors of 18491990540038007391125

• Number of divisors d(n): 48
• Complete list of divisors:
  1 5 25 125 269 1345 6725 19661 33625 72361 98305 361805 491525 1809025 2457625 5288809 9045125 19465109 26444045 97325545 132220225 386554921 486627725 661101125 1422689621 1932774605 2433138625 7113448105 9663873025 35567240525 48319365125 103983273749 177836202625 382703508049 519916368745 1913517540245 2599581843725 9567587701225 12997909218625 27971500638481 47837938506125 139857503192405 699287515962025 3496437579810125 7524333671751389 37621668358756945 188108341793784725 940541708968923625
• Sum of all divisors σ(n): 18492228234145187405020
• Sum of proper divisors (its aliquot sum) s(n): 237694107180013895
• 18491990540038007391125 is a deficient number, because the sum of its proper divisors (237694107180013895) is less than itself. Its deficiency is 18491752845930827377230

Bases of 18491990540038007391125

• Binary: 11111010100111001111101011101111010110011001010001010001111000001110010101₂
• Hexadecimal: 0x3EA73EBBD6651478395
• Base-36: 30ELH3F5KGS07TH

Squares and roots of 18491990540038007391125

• 18491990540038007391125 squared (18491990540038007391125²) is 341953714132855156234268604476780128728765625
• 18491990540038007391125 cubed (18491990540038007391125³) is 6323404846875618620834010923939588619090973071710409544147830078125
• The square root of 18491990540038007391125 is 135985258539.4387790923
• 18491990540038007391125 is a perfect cube number. Its cube root is 26444045

Scales and comparisons

• 18,491,990,540,038,007,391,125 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,491,990,540,038,007,391,125 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and 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 18491990540038007391125 cubic inches would be around 2203670.4 feet tall.

Recreational maths with 18491990540038007391125

• 18491990540038007391125 backwards is 52119370083004509919481
• The number of decimal digits it has is: 23
• The sum of 18491990540038007391125's digits is 89
• More coming soon!