18721672970

Names of 18721672970

• Cardinal: 18721672970 can be written as Eighteen billion, seven hundred twenty-one million, six hundred seventy-two thousand, nine hundred seventy.

Scientific notation

• Scientific notation: 1.872167297 × 10¹⁰

Factors of 18721672970

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 108

Divisors of 18721672970

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 5 7 10 11 13 14 22 26 29 35 41 55 58 65 70 77 82 91 110 121 130 143 145 154 169 182 203 205 242 286 287 290 319 338 377 385 406 410 451 455 533 574 605 638 715 754 770 845 847 902 910 1001 1015 1066 1183 1189 1210 1331 1430 1435 1573 1595 1690 1694 1859 1885 2002 2030 2233 2255 2366 2378 2639 2662 2665 2870 3146 3157 3190 3509 3718 3731 3770 4147 4235 4466 4510 4901 4961 5005 5278 5330 5863 5915 5945 6314 6655 6929 7018 7462 7865 8294 8323 8470 9295 9317 9802 9922 10010 11011 11165 11726 11830 11890 13013 13079 13195 13310 13858 15457 15730 15785 16646 17303 17545 18590 18634 18655 20449 20735 22022 22330 24505 24563 24805 26026 26158 26390 29029 29315 30914 31570 34307 34606 34645 34727 35090 37310 38599 40898 41041 41470 41615 45617 46585 48503 49010 49126 49610 53911 54571 55055 58058 58630 64493 65065 65395 68614 69290 69454 76219 77198 77285 82082 83230 86515 91234 91553 93170 97006 102245 107822 108199 109142 110110 121121 122815 128986 130130 130790 143143 143869 145145 152438 154570 170027 171535 173030 173635 183106 192995 200941 204490 205205 216398 224939 228085 242242 242515 245630 269555 270193 272855 286286 287738 290290 319319 322465 340054 343070 347270 377377 381095 381997 385990 401882 410410 449878 451451 456170 457765 485030 501787 533533 539110 540386 540995 545710 593021 605605 638638 644930 709423 715715 719345 754754 762190 763994 838409 850135 902902 915530 1003574 1004705 1007083 1067066 1081990 1124695 1186042 1190189 1211210 1350965 1406587 1418846 1431430 1438690 1574573 1582559 1596595 1676818 1700270 1870297 1886885 1909985 2009410 2014166 2210351 2249390 2257255 2380378 2508935 2667665 2701930 2813174 2965105 3149146 3165118 3193190 3512509 3547115 3740594 3773770 3819970 4151147 4192045 4420702 4514510 4965961 5017870 5035415 5335330 5868863 5930210 5950945 6523231 7025018 7032935 7094230 7872865 7912795 8302294 8384090 9222499 9351485 9931922 10070830 11051755 11077913 11737726 11901890 13046462 13092079 14065870 15472457 15745730 15825590 17562545 18444998 18702970 20573267 20755735 22103510 22155826 24313861 24829805 26184158 29344315 30944914 32616155 35125090 41146534 41511470 45662617 46112495 48627722 49659610 55389565 58688630 64557493 65232310 65460395 77362285 91325234 92224990 102866335 110779130 121569305 129114986 130920790 144012869 154724570 170197027 205732670 228313085 243138610 267452471 288025738 322787465 340394054 456626170 534904942 645574930 720064345 850985135 1337262355 1440128690 1701970270 1872167297 2674524710 3744334594 9360836485 18721672970
• Sum of all divisors σ(n): 48609953280
• Sum of proper divisors (its aliquot sum) s(n): 29888280310
• 18721672970 is an abundant number, because the sum of its proper divisors (29888280310) is greater than itself. Its abundance is 11166607340

Bases of 18721672970

• Binary: 10001011011111001100000111100001010₂
• Hexadecimal: 0x45BE60F0A
• Base-36: 8LMEFBE

Squares and roots of 18721672970

• 18721672970 squared (18721672970²) is 350501038795628620900
• 18721672970 cubed (18721672970³) is 6561965823977041706061907073000
• The square root of 18721672970 is 136827.1645909539
• The cube root of 18721672970 is 2655.3078837121

Scales and comparisons

• 18,721,672,970 seconds is equal to 595 years, 15 weeks, 1 day, 42 minutes, 50 seconds.
• To count from 1 to 18,721,672,970 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 18721672970 cubic inches would be around 221.3 feet tall.

Recreational maths with 18721672970

• 18721672970 backwards is 07927612781
• The number of decimal digits it has is: 11
• The sum of 18721672970's digits is 50
• More coming soon!