18215955849

Names of 18215955849

• Cardinal: 18215955849 can be written as Eighteen billion, two hundred fifteen million, nine hundred fifty-five thousand, eight hundred forty-nine.

Scientific notation

• Scientific notation: 1.8215955849 × 10¹⁰

Factors of 18215955849

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 163

Divisors of 18215955849

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 13 21 31 39 49 91 93 109 147 169 217 273 327 343 403 507 637 651 763 961 1029 1183 1209 1417 1519 1911 2289 2821 2883 3379 3549 4251 4459 4557 5239 5341 6727 8281 8463 9919 10137 10633 12493 13377 15717 16023 18421 19747 20181 23653 24843 29757 31899 36673 37387 37479 43927 47089 55263 57967 59241 69433 70959 87451 104749 110019 112161 128947 131781 138229 141267 162409 165571 173901 208299 256711 262353 307489 314247 329623 386841 414687 486031 487227 496713 571051 612157 733243 770133 902629 922467 988869 1136863 1158997 1361737 1458093 1713153 1796977 1836471 2152423 2199729 2707887 3410589 3476991 3997357 4085211 4285099 5132701 5390931 6318403 6457269 7958041 9532159 11992071 12855297 15066961 15398103 17702581 18955209 23874123 27981499 28596477 35928907 45200883 53107743 55706287 66725113 83944497 107786721 123918067 167118861 195870493 200175339 371754201 467075791 587611479 867426469 1401227373 2602279407 6071985283 18215955849
• Sum of all divisors σ(n): 31982544000
• Sum of proper divisors (its aliquot sum) s(n): 13766588151
• 18215955849 is a deficient number, because the sum of its proper divisors (13766588151) is less than itself. Its deficiency is 4449367698

Bases of 18215955849

• Binary: 10000111101110000010110110110001001₂
• Hexadecimal: 0x43DC16D89
• Base-36: 8D9B5HL

Squares and roots of 18215955849

• 18215955849 squared (18215955849²) is 331821047492717310801
• 18215955849 cubed (18215955849³) is 6044437550896270682589026825049
• The square root of 18215955849 is 134966.4989877115
• The cube root of 18215955849 is 2631.1805794757

Scales and comparisons

• 18,215,955,849 seconds is equal to 579 years, 10 weeks, 6 days, 19 hours, 44 minutes, 9 seconds.
• To count from 1 to 18,215,955,849 would take you about one thousand, one hundred fifty-eight 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 18215955849 cubic inches would be around 219.3 feet tall.

Recreational maths with 18215955849

• 18215955849 backwards is 94855951281
• The number of decimal digits it has is: 11
• The sum of 18215955849's digits is 57
• More coming soon!