18918328572

Names of 18918328572

• Cardinal: 18918328572 can be written as Eighteen billion, nine hundred eighteen million, three hundred twenty-eight thousand, five hundred seventy-two.

Scientific notation

• Scientific notation: 1.8918328572 × 10¹⁰

Factors of 18918328572

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 100

Divisors of 18918328572

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 3 4 6 9 11 12 13 18 22 26 27 33 36 39 44 52 54 66 71 78 81 99 108 117 132 142 143 156 162 198 213 234 243 284 286 297 324 351 396 426 429 468 486 572 594 639 702 729 781 852 858 891 923 972 1053 1188 1278 1287 1404 1458 1562 1716 1782 1846 1917 2106 2187 2343 2556 2574 2673 2769 2916 3124 3159 3564 3692 3834 3861 4212 4374 4686 5041 5148 5346 5538 5751 6318 6561 7029 7668 7722 8019 8307 8748 9372 9477 10082 10153 10692 11076 11502 11583 12636 13122 14058 15123 15444 16038 16614 17253 18954 20164 20306 21087 23004 23166 24057 24921 26244 28116 28431 30246 30459 32076 33228 34506 34749 37908 40612 42174 45369 46332 48114 49842 51759 55451 56862 60492 60918 63261 65533 69012 69498 72171 74763 84348 85293 90738 91377 96228 99684 103518 104247 110902 113724 121836 126522 131066 136107 138996 144342 149526 155277 166353 170586 181476 182754 189783 196599 207036 208494 221804 224289 253044 262132 272214 274131 288684 299052 310554 312741 332706 341172 365508 379566 393198 408321 416988 448578 465831 499059 544428 548262 569349 589797 621108 625482 665412 672867 720863 759132 786396 816642 822393 897156 931662 938223 998118 1096524 1138698 1179594 1224963 1250964 1345734 1441726 1497177 1633284 1644786 1708047 1769391 1863324 1876446 1996236 2018601 2162589 2277396 2359188 2449926 2467179 2691468 2883452 2994354 3289572 3416094 3538782 3674889 3752892 4037202 4325178 4491531 4899852 4934358 5124141 5308173 5988708 6055803 6487767 6832188 7077564 7349778 7401537 8074404 8650356 8983062 9868716 10248282 10616346 11024667 12111606 12975534 13474593 14699556 14803074 15924519 17966124 19463301 20496564 21232692 22049334 22204611 24223212 25951068 26949186 29606148 31849038 33074001 38926602 40423779 44098668 44409222 47773557 53898372 58389903 63698076 66148002 66613833 77853204 80847558 88818444 95547114 116779806 121271337 132296004 133227666 143320671 161695116 175169709 191094228 233559612 242542674 266455332 286641342 350339418 363814011 429962013 485085348 525509127 573282684 700678836 727628022 859924026 1051018254 1455256044 1576527381 1719848052 2102036508 3153054762 4729582143 6306109524 9459164286 18918328572
• Sum of all divisors σ(n): 59172830808
• Sum of proper divisors (its aliquot sum) s(n): 40254502236
• 18918328572 is an abundant number, because the sum of its proper divisors (40254502236) is greater than itself. Its abundance is 21336173664

Bases of 18918328572

• Binary: 10001100111100111101100100011111100₂
• Hexadecimal: 0x4679EC8FC
• Base-36: 8OVHFR0

Squares and roots of 18918328572

• 18918328572 squared (18918328572²) is 357903155958151559184
• 18918328572 cubed (18918328572³) is 6770929501372070678417016205248
• The square root of 18918328572 is 137543.9150671523
• The cube root of 18918328572 is 2664.5727858943

Scales and comparisons

• 18,918,328,572 seconds is equal to 601 years, 28 weeks, 2 days, 3 hours, 16 minutes, 12 seconds.
• To count from 1 to 18,918,328,572 would take you about one thousand, two hundred three 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 18918328572 cubic inches would be around 222 feet tall.

Recreational maths with 18918328572

• 18918328572 backwards is 27582381981
• 18918328572 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18918328572's digits is 54
• More coming soon!