18149730291

Names of 18149730291

• Cardinal: 18149730291 can be written as Eighteen billion, one hundred forty-nine million, seven hundred thirty thousand, two hundred ninety-one.

Scientific notation

• Scientific notation: 1.8149730291 × 10¹⁰

Factors of 18149730291

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 958

Divisors of 18149730291

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 7 9 11 21 27 33 49 63 77 99 121 147 189 231 297 363 441 539 693 847 937 1089 1323 1331 1617 2079 2541 2811 3267 3993 4851 5929 6559 7623 8433 9317 10307 11979 14553 14641 17787 19677 22869 25299 27951 30921 35937 43923 45913 53361 59031 65219 72149 83853 92763 102487 113377 131769 137739 160083 177093 195657 216447 251559 278289 307461 340131 395307 413217 505043 586971 649341 717409 793639 922383 1020393 1239651 1247147 1515129 1760913 1948023 2152227 2380917 2767149 3061179 3741441 4545387 5555473 6456681 7142751 8730029 11224323 13636161 13718617 16666419 19370043 21428253 26190087 33672969 41155851 49999257 61110203 78570261 96030319 123467553 149997771 183330609 235710783 288090957 370402659 549991827 672212233 864272871 1649975481 2016636699 2592818613 6049910097 18149730291
• Sum of all divisors σ(n): 34442797200
• Sum of proper divisors (its aliquot sum) s(n): 16293066909
• 18149730291 is a deficient number, because the sum of its proper divisors (16293066909) is less than itself. Its deficiency is 1856663382

Bases of 18149730291

• Binary: 10000111001110011101110011111110011₂
• Hexadecimal: 0x439CEE7F3
• Base-36: 8C5VPIR

Squares and roots of 18149730291

• 18149730291 squared (18149730291²) is 329412709636042944681
• 18149730291 cubed (18149730291³) is 5978751834321676218453583032171
• The square root of 18149730291 is 134720.9348653727
• The cube root of 18149730291 is 2627.9880853175

Scales and comparisons

• 18,149,730,291 seconds is equal to 577 years, 5 weeks, 3 days, 7 hours, 44 minutes, 51 seconds.
• To count from 1 to 18,149,730,291 would take you about one thousand, one hundred fifty-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 18149730291 cubic inches would be around 219 feet tall.

Recreational maths with 18149730291

• 18149730291 backwards is 19203794181
• The number of decimal digits it has is: 11
• The sum of 18149730291's digits is 45
• More coming soon!