18509008440

Names of 18509008440

• Cardinal: 18509008440 can be written as Eighteen billion, five hundred nine million, eight thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.850900844 × 10¹⁰

Factors of 18509008440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 120

Divisors of 18509008440

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 97 104 120 130 156 169 194 195 260 291 312 338 388 390 485 507 520 582 676 776 780 845 970 1014 1164 1261 1352 1455 1560 1690 1940 2028 2328 2522 2535 2910 3380 3783 3880 4056 5044 5070 5820 6305 6760 7566 9409 10088 10140 11640 12610 15132 16393 18818 18915 20280 25220 28227 30264 32786 37636 37830 47045 49179 50440 56454 65572 75272 75660 81965 94090 98358 112908 122317 131144 141135 151320 163930 188180 196716 225816 244634 245895 282270 327860 366951 376360 393432 489268 491790 564540 611585 655720 733902 912673 978536 983580 1129080 1223170 1467804 1590121 1825346 1834755 1967160 2446340 2738019 2935608 3180242 3650692 3669510 4563365 4770363 4892680 5476038 6360484 7301384 7339020 7950605 9126730 9540726 10952076 11864749 12720968 13690095 14678040 15901210 18253460 19081452 21904152 23729498 23851815 27380190 31802420 35594247 36506920 38162904 47458996 47703630 54760380 59323745 63604840 71188494 94917992 95407260 109520760 118647490 142376988 154241737 177971235 190814520 237294980 284753976 308483474 355942470 462725211 474589960 616966948 711884940 771208685 925450422 1233933896 1423769880 1542417370 1850900844 2313626055 3084834740 3701801688 4627252110 6169669480 9254504220 18509008440
• Sum of all divisors σ(n): 60753218400
• Sum of proper divisors (its aliquot sum) s(n): 42244209960
• 18509008440 is an abundant number, because the sum of its proper divisors (42244209960) is greater than itself. Its abundance is 23735201520

Bases of 18509008440

• Binary: 10001001111001110010000111000111000₂
• Hexadecimal: 0x44F390E38
• Base-36: 8I3SABC

Squares and roots of 18509008440

• 18509008440 squared (18509008440²) is 342583393431991233600
• 18509008440 cubed (18509008440³) is 6340878920436566308708411584000
• The square root of 18509008440 is 136047.8167410265
• The cube root of 18509008440 is 2645.2154531393

Scales and comparisons

• 18,509,008,440 seconds is equal to 588 years, 27 weeks, 3 days, 15 hours, 14 minutes.
• To count from 1 to 18,509,008,440 would take you about one thousand, one hundred seventy-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 18509008440 cubic inches would be around 220.4 feet tall.

Recreational maths with 18509008440

• 18509008440 backwards is 04480090581
• 18509008440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18509008440's digits is 39
• More coming soon!