18268777989

Names of 18268777989

• Cardinal: 18268777989 can be written as Eighteen billion, two hundred sixty-eight million, seven hundred seventy-seven thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 1.8268777989 × 10¹⁰

Factors of 18268777989

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5044

Divisors of 18268777989

• Number of divisors d(n): 160
• Complete list of divisors:
  1 3 7 9 11 19 21 27 31 33 57 63 77 81 93 99 133 171 189 209 217 231 279 297 341 399 513 567 589 627 651 693 837 891 1023 1197 1463 1539 1767 1881 1953 2079 2387 2511 3069 3591 4123 4389 4973 5301 5643 5859 6237 6479 7161 9207 10773 12369 13167 14919 15903 16929 17577 19437 21483 27621 34811 37107 39501 44757 45353 47709 54703 58311 64449 94487 104433 111321 118503 134271 136059 154163 164109 174933 193347 283461 313299 333963 382921 402813 408177 462489 492327 524799 661409 850383 939897 1039357 1079141 1148763 1224531 1387467 1476981 1695793 1984227 2551149 2819691 2929097 3118071 3237423 3446289 3673593 4162401 4430943 5087379 5952681 7275499 7653447 8787291 9354213 9712269 10338867 11870551 12487203 15262137 17858043 20503679 21826497 26361873 28062639 29136807 31016601 32220067 35611653 45786411 53574129 61511037 65479491 79085619 84187917 87410421 96660201 106834959 137359233 184533111 196438473 225540469 237256857 289980603 320504877 553599333 589315419 676621407 869941809 961514631 1660797999 2029864221 2609825427 6089592663 18268777989
• Sum of all divisors σ(n): 36977909760
• Sum of proper divisors (its aliquot sum) s(n): 18709131771
• 18268777989 is an abundant number, because the sum of its proper divisors (18709131771) is greater than itself. Its abundance is 440353782

Bases of 18268777989

• Binary: 10001000000111001110110111000000101₂
• Hexadecimal: 0x440E76E05
• Base-36: 8E4RBB9

Squares and roots of 18268777989

• 18268777989 squared (18268777989²) is 333748249211370884121
• 18268777989 cubed (18268777989³) is 6097172669059979016345194412669
• The square root of 18268777989 is 135162.0434478555
• The cube root of 18268777989 is 2633.7214007357

Scales and comparisons

• 18,268,777,989 seconds is equal to 580 years, 46 weeks, 2 days, 4 hours, 33 minutes, 9 seconds.
• To count from 1 to 18,268,777,989 would take you about one thousand, one hundred sixty-one 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 18268777989 cubic inches would be around 219.5 feet tall.

Recreational maths with 18268777989

• 18268777989 backwards is 98977786281
• The number of decimal digits it has is: 11
• The sum of 18268777989's digits is 72
• More coming soon!