18078807231

Names of 18078807231

• Cardinal: 18078807231 can be written as Eighteen billion, seventy-eight million, eight hundred seven thousand, two hundred thirty-one.

Scientific notation

• Scientific notation: 1.8078807231 × 10¹⁰

Factors of 18078807231

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 264

Divisors of 18078807231

• Number of divisors d(n): 90
• Complete list of divisors:
  1 3 9 23 27 47 69 81 141 191 207 423 529 573 621 1081 1269 1587 1719 1863 2209 3243 3807 4393 4761 5157 6627 8977 9729 13179 14283 15471 19881 24863 26931 29187 39537 42849 50807 59643 74589 80793 87561 101039 118611 152421 178929 206471 223767 242379 303117 355833 421919 457263 619413 671301 727137 909351 1168561 1265757 1371789 1858239 2013903 2728053 3505683 3797271 4115367 4748833 5574717 8184159 9704137 10517049 11391813 14246499 16724151 29112411 31551147 34175439 42739497 87337233 94653441 128218491 223195151 262011699 384655473 669585453 786035097 2008756359 6026269077 18078807231
• Sum of all divisors σ(n): 28996347072
• Sum of proper divisors (its aliquot sum) s(n): 10917539841
• 18078807231 is a deficient number, because the sum of its proper divisors (10917539841) is less than itself. Its deficiency is 7161267390

Bases of 18078807231

• Binary: 10000110101100101001011010010111111₂
• Hexadecimal: 0x43594B4BF
• Base-36: 8AZNKXR

Squares and roots of 18078807231

• 18078807231 squared (18078807231²) is 326843270895657887361
• 18078807231 cubed (18078807231³) is 5908936489272111660524230307391
• The square root of 18078807231 is 134457.4550963985
• The cube root of 18078807231 is 2624.5605180987

Scales and comparisons

• 18,078,807,231 seconds is equal to 574 years, 44 weeks, 1 day, 10 hours, 53 minutes, 51 seconds.
• To count from 1 to 18,078,807,231 would take you about one thousand, one hundred forty-nine 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 18078807231 cubic inches would be around 218.7 feet tall.

Recreational maths with 18078807231

• 18078807231 backwards is 13270887081
• The number of decimal digits it has is: 11
• The sum of 18078807231's digits is 45
• More coming soon!