1813428981

Names of 1813428981

• Cardinal: 1813428981 can be written as One billion, eight hundred thirteen million, four hundred twenty-eight thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.813428981 × 10⁹

Factors of 1813428981

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 316

Divisors of 1813428981

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 13 17 21 39 43 51 63 91 117 119 129 153 169 221 233 273 301 357 387 507 559 663 699 731 819 903 1071 1183 1521 1547 1631 1677 1989 2097 2193 2709 2873 3029 3549 3913 3961 4641 4893 5031 5117 6579 7267 8619 9087 9503 10019 10647 11739 11883 13923 14679 15351 20111 21203 21801 25857 27261 27727 28509 30057 35217 35649 39377 46053 50869 51493 60333 63609 65403 66521 70133 83181 85527 90171 118131 123539 130247 152607 154479 170323 180999 190827 199563 210399 249543 275639 354393 360451 370617 390741 457821 463437 510969 598689 631197 669409 826917 864773 911729 1081353 1111851 1172223 1192261 1532907 1693211 2008227 2214199 2480751 2594319 2735187 3244059 3576783 4685863 5079633 6024681 6642597 7782957 8205561 10730349 11852477 14057589 15238899 15499393 19927791 28784587 35557431 42172767 46498179 86353761 106672293 139494537 201492109 259061283 604476327 1813428981
• Sum of all divisors σ(n): 3527162496
• Sum of proper divisors (its aliquot sum) s(n): 1713733515
• 1813428981 is a deficient number, because the sum of its proper divisors (1713733515) is less than itself. Its deficiency is 99695466

Bases of 1813428981

• Binary: 1101100000101101011101011110101₂
• Hexadecimal: 0x6C16BAF5
• Base-36: TZO2R9

Squares and roots of 1813428981

• 1813428981 squared (1813428981²) is 3288524669130698361
• 1813428981 cubed (1813428981³) is 5963505939735044484606600141
• The square root of 1813428981 is 42584.3748457107
• The cube root of 1813428981 is 1219.4580099485

Scales and comparisons

• 1,813,428,981 seconds is equal to 57 years, 34 weeks, 2 days, 18 hours, 16 minutes, 21 seconds.
• To count from 1 to 1,813,428,981 would take you about one hundred fifteen 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 1813428981 cubic inches would be around 101.6 feet tall.

Recreational maths with 1813428981

• 1813428981 backwards is 1898243181
• The number of decimal digits it has is: 10
• The sum of 1813428981's digits is 45
• More coming soon!