18331661985

Names of 18331661985

• Cardinal: 18331661985 can be written as Eighteen billion, three hundred thirty-one million, six hundred sixty-one thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 1.8331661985 × 10¹⁰

Factors of 18331661985

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 229

Divisors of 18331661985

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 7 13 15 19 21 31 35 39 57 65 91 93 95 105 133 151 155 195 217 247 273 285 399 403 453 455 465 589 651 665 741 755 1057 1085 1209 1235 1365 1729 1767 1963 1995 2015 2265 2821 2869 2945 3171 3255 3705 4123 4681 5187 5285 5889 6045 7657 8463 8607 8645 8835 9815 12369 13741 14043 14105 14345 15855 20083 20615 22801 22971 23405 25935 29445 32767 37297 38285 41223 42315 43035 53599 60249 60853 61845 68403 68705 70215 88939 98301 100415 111891 114005 114855 159607 160797 163835 182559 186485 206115 261079 266817 267995 296413 301245 304265 342015 425971 433219 444695 478821 491505 559455 622573 706831 783237 798035 803985 889239 912795 1156207 1277913 1299657 1305395 1334085 1482065 1867719 2074891 2120493 2129855 2166095 2394105 3032533 3112865 3468621 3534155 3916185 4446195 4947817 5631847 5781035 6224673 6389565 6498285 8093449 9097599 9188803 9338595 10374455 10602465 13429789 14843451 15162665 16895541 17343105 24280347 24739085 27566409 28159235 31123365 39422929 40289367 40467245 45487995 45944015 64321621 67148945 74217255 84477705 94008523 118268787 121401735 137832045 174587257 192964863 197114645 201446835 282025569 321608105 470042615 523761771 591343935 872936285 964824315 1222110799 1410127845 2618808855 3666332397 6110553995 18331661985
• Sum of all divisors σ(n): 39486504960
• Sum of proper divisors (its aliquot sum) s(n): 21154842975
• 18331661985 is an abundant number, because the sum of its proper divisors (21154842975) is greater than itself. Its abundance is 2823180990

Bases of 18331661985

• Binary: 10001000100101001101111011010100001₂
• Hexadecimal: 0x444A6F6A1
• Base-36: 8F674WX

Squares and roots of 18331661985

• 18331661985 squared (18331661985²) is 336049831132294140225
• 18331661985 cubed (18331661985³) is 6160351914433545996200891846625
• The square root of 18331661985 is 135394.4680738471
• The cube root of 18331661985 is 2636.7398339687

Scales and comparisons

• 18,331,661,985 seconds is equal to 582 years, 46 weeks, 2 days, 19 minutes, 45 seconds.
• To count from 1 to 18,331,661,985 would take you about one thousand, one hundred sixty-five 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 18331661985 cubic inches would be around 219.7 feet tall.

Recreational maths with 18331661985

• 18331661985 backwards is 58916613381
• The number of decimal digits it has is: 11
• The sum of 18331661985's digits is 51
• More coming soon!