18491198940981

Names of 18491198940981

• Cardinal: 18491198940981 can be written as Eighteen trillion, four hundred ninety-one billion, one hundred ninety-eight million, nine hundred forty thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.8491198940981 × 10¹³

Factors of 18491198940981

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 8652

Divisors of 18491198940981

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 9 13 23 29 39 69 87 117 169 207 261 299 377 507 667 897 1131 1521 2001 2691 3393 3851 3887 4733 4901 6003 8671 11553 11661 14199 14703 26013 34659 34983 42597 44109 50063 61529 78039 88573 108859 111679 112723 137257 150189 184587 265719 326577 335037 338169 411771 450567 553761 650819 797157 799877 979731 1005111 1014507 1151449 1235313 1415167 1451827 1784341 1952457 2399631 2568617 3156911 3454347 4245501 4355481 5353023 5857371 7198893 7705851 9470733 10363041 12736503 13066443 14968837 16059069 18226783 18397171 18873751 23117553 23196433 28412199 33392021 41039843 44906511 54680349 55191513 56621253 69589299 100176063 123119529 134719533 164041047 165574539 169863759 208767897 236948179 300528189 369358587 419216009 434096273 528576707 533517959 710844537 1257648027 1302288819 1585730121 1600553877 2132533611 3080326327 3772944081 3906866457 4757190363 4801661631 5449808117 6871497191 9240978981 12157264261 16349424351 20614491573 27722936943 36471792783 49048273053 61843474719 70847505521 89329463483 109415378349 158044435393 212542516563 267988390449 474133306179 637627549689 803965171347 1422399918537 2054577660109 6163732980327 18491198940981
• Sum of all divisors σ(n): 31234997139840
• Sum of proper divisors (its aliquot sum) s(n): 12743798198859
• 18491198940981 is a deficient number, because the sum of its proper divisors (12743798198859) is less than itself. Its deficiency is 5747400742122

Bases of 18491198940981

• Binary: 100001101000101010001010110000010011100110101₂
• Hexadecimal: 0x10D151582735
• Base-36: 6JYQMF5F9

Squares and roots of 18491198940981

• 18491198940981 squared (18491198940981²) is 341924438274936855921242361
• 18491198940981 cubed (18491198940981³) is 6322592810925035692725522524865036096141
• The square root of 18491198940981 is 4300139.4094820925
• The cube root of 18491198940981 is 26443.6676586181

Scales and comparisons

• 18,491,198,940,981 seconds is equal to 587,962 years, 48 weeks, 2 days, 6 hours, 16 minutes, 21 seconds.
• To count from 1 to 18,491,198,940,981 would take you about one million, four hundred sixty-nine thousand, nine hundred 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 18491198940981 cubic inches would be around 2203.6 feet tall.

Recreational maths with 18491198940981

• 18491198940981 backwards is 18904989119481
• The number of decimal digits it has is: 14
• The sum of 18491198940981's digits is 72
• More coming soon!