18131420208

Names of 18131420208

• Cardinal: 18131420208 can be written as Eighteen billion, one hundred thirty-one million, four hundred twenty thousand, two hundred eight.

Scientific notation

• Scientific notation: 1.8131420208 × 10¹⁰

Factors of 18131420208

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 799

Divisors of 18131420208

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 22 24 33 37 44 48 66 74 88 111 121 132 139 148 176 222 242 264 278 296 363 407 417 444 484 528 556 592 607 726 814 834 888 968 1112 1214 1221 1452 1529 1628 1668 1776 1821 1936 2224 2428 2442 2904 3058 3256 3336 3642 4477 4587 4856 4884 5143 5808 6116 6512 6672 6677 7284 8954 9174 9712 9768 10286 12232 13354 13431 14568 15429 16819 17908 18348 19536 20031 20572 22459 24464 26708 26862 29136 30858 33638 35816 36696 40062 41144 44918 50457 53416 53724 56573 61716 67276 67377 71632 73392 73447 80124 82288 84373 89836 100914 106832 107448 113146 123432 134552 134754 146894 160248 168746 169719 179672 201828 214896 220341 226292 246864 247049 253119 269104 269508 293788 320496 337492 339438 359344 403656 440682 452584 494098 506238 539016 587576 622303 674984 678876 741147 807312 881364 905168 928103 988196 1012476 1078032 1175152 1244606 1349968 1357752 1482294 1762728 1856206 1866909 1976392 2024952 2489212 2715504 2717539 2784309 2964588 3121801 3525456 3712412 3733818 3952784 4049904 4978424 5435078 5568618 5929176 6243602 7424824 7467636 8152617 9365403 9956848 10209133 10870156 11137236 11858352 12487204 14849648 14935272 16305234 18730806 20418266 21740312 22274472 24974408 29870544 30627399 32610468 34339811 37461612 40836532 43480624 44548944 49948816 61254798 65220936 68679622 74923224 81673064 103019433 122509596 130441872 137359244 149846448 163346128 206038866 245019192 274718488 377737921 412077732 490038384 549436976 755475842 824155464 1133213763 1510951684 1648310928 2266427526 3021903368 4532855052 6043806736 9065710104 18131420208
• Sum of all divisors σ(n): 53344363520
• Sum of proper divisors (its aliquot sum) s(n): 35212943312
• 18131420208 is an abundant number, because the sum of its proper divisors (35212943312) is greater than itself. Its abundance is 17081523104

Bases of 18131420208

• Binary: 10000111000101101111000010000110000₂
• Hexadecimal: 0x438B78430
• Base-36: 8BUZ9DC

Squares and roots of 18131420208

• 18131420208 squared (18131420208²) is 328748398759070763264
• 18131420208 cubed (18131420208³) is 5960675360607857760346873638912
• The square root of 18131420208 is 134652.9621211505
• The cube root of 18131420208 is 2627.1040525239

Scales and comparisons

• 18,131,420,208 seconds is equal to 576 years, 27 weeks, 1 day, 9 hours, 36 minutes, 48 seconds.
• To count from 1 to 18,131,420,208 would take you about one thousand, one hundred fifty-three 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 18131420208 cubic inches would be around 218.9 feet tall.

Recreational maths with 18131420208

• 18131420208 backwards is 80202413181
• The number of decimal digits it has is: 11
• The sum of 18131420208's digits is 30
• More coming soon!