18809517438

Names of 18809517438

• Cardinal: 18809517438 can be written as Eighteen billion, eight hundred nine million, five hundred seventeen thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8809517438 × 10¹⁰

Factors of 18809517438

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 19529

Divisors of 18809517438

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 9 18 19 23 27 38 41 46 54 57 69 82 114 123 138 171 207 246 342 369 414 437 513 621 738 779 874 943 1026 1107 1242 1311 1558 1886 2214 2337 2622 2829 3933 4674 5658 7011 7866 8487 11799 14022 16974 17917 19441 21033 23598 25461 35834 38882 42066 50922 53751 58323 107502 116646 161253 174969 322506 349938 369379 447143 483759 524907 738758 797081 894286 967518 1049814 1108137 1341429 1594162 2216274 2391243 2682858 3324411 4024287 4782486 6648822 7173729 8048574 8495717 9973233 12072861 14347458 15144539 16991434 18332863 19946466 21521187 24145722 25487151 30289078 36665726 43042374 45433617 50974302 54998589 76461453 90867234 109997178 136300851 152922906 164995767 229384359 272601702 329991534 348324397 408902553 458768718 494987301 696648794 817805106 989974602 1044973191 2089946382 3134919573 6269839146 9404758719 18809517438
• Sum of all divisors σ(n): 47034086400
• Sum of proper divisors (its aliquot sum) s(n): 28224568962
• 18809517438 is an abundant number, because the sum of its proper divisors (28224568962) is greater than itself. Its abundance is 9415051524

Bases of 18809517438

• Binary: 10001100001001000100111010101111110₂
• Hexadecimal: 0x46122757E
• Base-36: 8N2P8JI

Squares and roots of 18809517438

• 18809517438 squared (18809517438²) is 353797946250426083844
• 18809517438 cubed (18809517438³) is 6654768639525976138993768071672
• The square root of 18809517438 is 137147.7941419401
• The cube root of 18809517438 is 2659.4544190761

Scales and comparisons

• 18,809,517,438 seconds is equal to 598 years, 4 weeks, 2 days, 17 hours, 57 minutes, 18 seconds.
• To count from 1 to 18,809,517,438 would take you about one thousand, one hundred ninety-six 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 18809517438 cubic inches would be around 221.6 feet tall.

Recreational maths with 18809517438

• 18809517438 backwards is 83471590881
• 18809517438 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18809517438's digits is 54
• More coming soon!