18313297821

Names of 18313297821

• Cardinal: 18313297821 can be written as Eighteen billion, three hundred thirteen million, two hundred ninety-seven thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.8313297821 × 10¹⁰

Factors of 18313297821

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 264

Divisors of 18313297821

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 9 13 17 21 39 43 51 63 91 117 119 129 153 169 181 221 273 301 357 387 507 543 559 663 731 819 903 1071 1183 1267 1521 1547 1629 1677 1989 2193 2197 2353 2709 2873 3077 3549 3801 3913 4641 5031 5117 6579 6591 7059 7267 7783 8619 9231 9503 10647 11403 11739 13923 15351 15379 16471 19773 20111 21177 21539 21801 23349 25857 27693 28509 30589 35217 37349 40001 46053 46137 49413 50869 54481 60333 64617 65403 66521 70047 85527 91767 94471 101179 112047 120003 123539 132311 138411 148239 152607 163443 180999 193851 199563 214123 261443 275301 280007 283413 303537 336141 360009 370617 396933 397657 457821 490329 520013 598689 642369 661297 708253 784329 840021 850239 864773 910611 926177 1111851 1190799 1192971 1315327 1560039 1606007 1720043 1927107 1983891 2124759 2352987 2520063 2594319 2778531 2783599 3578913 3640091 3945981 4680117 4818021 5160129 5951673 6374277 6760169 7782957 8335593 8350797 9207289 10920273 11242049 11837943 12040301 14454063 15480387 17099251 20280507 22360559 25052391 27621867 32760819 33726147 36120903 47321183 51297753 60841521 67081677 82865601 101178441 108362709 119694757 141963549 153893259 156523913 201245031 290687267 359084271 425890647 469571739 872061801 1077252813 1408715217 2034810869 2616185403 6104432607 18313297821
• Sum of all divisors σ(n): 35678522880
• Sum of proper divisors (its aliquot sum) s(n): 17365225059
• 18313297821 is a deficient number, because the sum of its proper divisors (17365225059) is less than itself. Its deficiency is 948072762

Bases of 18313297821

• Binary: 10001000011100011101011111110011101₂
• Hexadecimal: 0x4438EBF9D
• Base-36: 8EV9J19

Squares and roots of 18313297821

• 18313297821 squared (18313297821²) is 335376877080643348041
• 18313297821 cubed (18313297821³) is 6141856632254730666957389918661
• The square root of 18313297821 is 135326.6338198065
• The cube root of 18313297821 is 2635.8590682039

Scales and comparisons

• 18,313,297,821 seconds is equal to 582 years, 15 weeks, 6 days, 11 hours, 10 minutes, 21 seconds.
• To count from 1 to 18,313,297,821 would take you about one thousand, one hundred sixty-four 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 18313297821 cubic inches would be around 219.7 feet tall.

Recreational maths with 18313297821

• 18313297821 backwards is 12879231381
• The number of decimal digits it has is: 11
• The sum of 18313297821's digits is 45
• More coming soon!