18404721018

Names of 18404721018

• Cardinal: 18404721018 can be written as Eighteen billion, four hundred four million, seven hundred twenty-one thousand and eighteen.

Scientific notation

• Scientific notation: 1.8404721018 × 10¹⁰

Factors of 18404721018

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 993

Divisors of 18404721018

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 6 9 18 27 31 54 61 62 73 81 93 122 146 162 183 186 219 279 366 438 549 558 657 823 837 1098 1314 1646 1647 1674 1891 1971 2263 2469 2511 3294 3782 3942 4453 4526 4938 4941 5022 5673 5913 6789 7407 8906 9882 11346 11826 13359 13578 14814 17019 20367 22221 25513 26718 34038 40077 40734 44442 50203 51026 51057 60079 61101 66663 76539 80154 100406 102114 120158 120231 122202 133326 138043 150609 153078 153171 180237 183303 229617 240462 276086 301218 306342 360474 360693 366606 414129 451827 459234 540711 688851 721386 828258 903654 1081422 1242387 1355481 1377702 1556293 1622133 1862449 2066553 2484774 2710962 3112586 3244266 3664819 3724898 3727161 4066443 4133106 4668879 4866399 5587347 7329638 7454322 8132886 9337758 9732798 10994457 11174694 11181483 14006637 16762041 21988914 22362966 28013274 32983371 33524082 42019911 50286123 65966742 84039822 98950113 100572246 113609389 126059733 150858369 197900226 227218778 252119466 296850339 301716738 340828167 593700678 681656334 1022484501 2044969002 3067453503 6134907006 9202360509 18404721018
• Sum of all divisors σ(n): 43914427392
• Sum of proper divisors (its aliquot sum) s(n): 25509706374
• 18404721018 is an abundant number, because the sum of its proper divisors (25509706374) is greater than itself. Its abundance is 7104985356

Bases of 18404721018

• Binary: 10001001001000000011100000101111010₂
• Hexadecimal: 0x44901C17A
• Base-36: 8GDP1MI

Squares and roots of 18404721018

• 18404721018 squared (18404721018²) is 338733755750410956324
• 18404721018 cubed (18404721018³) is 6234300273965666889993802817832
• The square root of 18404721018 is 135664.0004496403
• The cube root of 18404721018 is 2640.2380131485

Scales and comparisons

• 18,404,721,018 seconds is equal to 585 years, 11 weeks, 14 hours, 30 minutes, 18 seconds.
• To count from 1 to 18,404,721,018 would take you about one thousand, one hundred seventy 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 18404721018 cubic inches would be around 220 feet tall.

Recreational maths with 18404721018

• 18404721018 backwards is 81012740481
• The number of decimal digits it has is: 11
• The sum of 18404721018's digits is 36
• More coming soon!