18354961989

Names of 18354961989

• Cardinal: 18354961989 can be written as Eighteen billion, three hundred fifty-four million, nine hundred sixty-one thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 1.8354961989 × 10¹⁰

Factors of 18354961989

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 121

Divisors of 18354961989

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 7 9 13 19 21 27 39 49 57 63 79 81 91 117 133 147 171 189 237 243 247 273 351 399 441 513 553 567 637 711 741 819 931 1027 1053 1197 1323 1501 1539 1659 1701 1729 1911 2133 2223 2457 2793 3081 3159 3591 3871 3969 4503 4617 4977 5187 5733 6241 6399 6669 7189 7371 8379 9243 10507 10773 11613 11907 12103 13509 14931 15561 17199 18723 19197 19513 20007 21567 22113 25137 27729 31521 32319 34839 36309 40527 43687 44793 46683 50323 51597 56169 58539 60021 64701 73549 75411 81133 83187 94563 104517 108927 118579 121581 131061 134379 136591 140049 150969 154791 168507 175617 194103 220647 226233 243399 249561 283689 305809 313551 326781 355737 364743 393183 409773 420147 452907 505521 526851 567931 582309 661941 730197 830053 851067 917427 940653 956137 980343 1067211 1179549 1229319 1358721 1516563 1541527 1580553 1703793 1746927 1985823 2190591 2490159 2553201 2752281 2868411 2941029 3201633 3538647 3687957 3975517 4076163 4624581 4741659 5111379 5810371 5957469 6571773 7470477 8256843 8605233 9604899 10615941 10790689 11063871 11926551 12228489 13873743 15334137 17431113 17872407 19715319 22411431 24770529 25815699 28814697 32372067 33191613 35779653 41621229 46002411 52293339 67234293 74311587 75534823 77447097 97116201 107338959 124863687 138007233 156880017 201702879 226604469 232341291 291348603 322016877 374591061 470640051 679813407 874045809 966050631 1411920153 2039440221 2622137427 6118320663 18354961989
• Sum of all divisors σ(n): 36721470240
• Sum of proper divisors (its aliquot sum) s(n): 18366508251
• 18354961989 is an abundant number, because the sum of its proper divisors (18366508251) is greater than itself. Its abundance is 11546262

Bases of 18354961989

• Binary: 10001000110000010100111111001000101₂
• Hexadecimal: 0x4460A7E45
• Base-36: 8FK2JB9

Squares and roots of 18354961989

• 18354961989 squared (18354961989²) is 336904629617634836121
• 18354961989 cubed (18354961989³) is 6183871670549811021083199204669
• The square root of 18354961989 is 135480.4856390765
• The cube root of 18354961989 is 2637.8564819149

Scales and comparisons

• 18,354,961,989 seconds is equal to 583 years, 32 weeks, 5 days, 16 hours, 33 minutes, 9 seconds.
• To count from 1 to 18,354,961,989 would take you about one thousand, one hundred sixty-seven 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 18354961989 cubic inches would be around 219.8 feet tall.

Recreational maths with 18354961989

• 18354961989 backwards is 98916945381
• 18354961989 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18354961989's digits is 63
• More coming soon!