18721301742

Names of 18721301742

• Cardinal: 18721301742 can be written as Eighteen billion, seven hundred twenty-one million, three hundred one thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 1.8721301742 × 10¹⁰

Factors of 18721301742

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 936

Divisors of 18721301742

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 6 9 11 13 18 22 26 27 33 39 54 66 78 81 99 117 121 143 162 198 234 242 243 286 297 351 363 429 486 594 702 726 729 858 891 907 1053 1089 1287 1458 1573 1782 1814 2106 2178 2187 2574 2673 2721 3146 3159 3267 3861 4374 4719 5346 5442 6318 6534 6561 7722 8019 8163 9438 9477 9801 9977 11583 11791 13122 14157 16038 16326 18954 19602 19954 23166 23582 24057 24489 28314 28431 29403 29931 34749 35373 42471 48114 48978 56862 58806 59862 69498 70746 72171 73467 84942 85293 88209 89793 104247 106119 109747 127413 129701 144342 146934 170586 176418 179586 208494 212238 219494 220401 254826 259402 264627 269379 312741 318357 329241 382239 389103 440802 529254 538758 625482 636714 658482 661203 764478 778206 793881 808137 938223 955071 987723 1146717 1167309 1322406 1426711 1587762 1616274 1876446 1910142 1975446 1983609 2293434 2334618 2424411 2853422 2865213 2963169 3440151 3501927 3967218 4280133 4848822 5730426 5926338 5950827 6880302 7003854 7273233 8560266 8595639 8889507 10320453 10505781 11901654 12840399 14546466 17191278 17779014 20640906 21011562 21819699 25680798 25786917 26668521 31517343 38521197 43639398 51573834 53337042 63034686 65459097 77042394 77360751 80005563 94552029 115563591 130918194 154721502 160011126 189104058 231127182 240016689 283656087 346690773 480033378 567312174 693381546 720050067 850968261 1040072319 1440100134 1701936522 2080144638 3120216957 6240433914 9360650871 18721301742
• Sum of all divisors σ(n): 49914418008
• Sum of proper divisors (its aliquot sum) s(n): 31193116266
• 18721301742 is an abundant number, because the sum of its proper divisors (31193116266) is greater than itself. Its abundance is 12471814524

Bases of 18721301742

• Binary: 10001011011111000000110010011101110₂
• Hexadecimal: 0x45BE064EE
• Base-36: 8LM6GVI

Squares and roots of 18721301742

• 18721301742 squared (18721301742²) is 350487138915012234564
• 18721301742 cubed (18721301742³) is 6561575484318214536894325810488
• The square root of 18721301742 is 136825.8080261177
• The cube root of 18721301742 is 2655.2903330877

Scales and comparisons

• 18,721,301,742 seconds is equal to 595 years, 14 weeks, 3 days, 17 hours, 35 minutes, 42 seconds.
• To count from 1 to 18,721,301,742 would take you about one thousand, one hundred ninety 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 18721301742 cubic inches would be around 221.3 feet tall.

Recreational maths with 18721301742

• 18721301742 backwards is 24710312781
• The number of decimal digits it has is: 11
• The sum of 18721301742's digits is 36
• More coming soon!