18145184720

Names of 18145184720

• Cardinal: 18145184720 can be written as Eighteen billion, one hundred forty-five million, one hundred eighty-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.814518472 × 10¹⁰

Factors of 18145184720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 296

Divisors of 18145184720

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 40 43 47 52 65 80 86 89 94 97 104 130 172 178 188 194 208 215 235 260 344 356 376 388 430 445 470 485 520 559 611 688 712 752 776 860 890 940 970 1040 1118 1157 1222 1261 1424 1552 1720 1780 1880 1940 2021 2236 2314 2444 2522 2795 3055 3440 3560 3760 3827 3880 4042 4171 4183 4472 4559 4628 4888 5044 5590 5785 6110 6305 7120 7654 7760 8084 8342 8366 8633 8944 9118 9256 9776 10088 10105 11180 11570 12220 12610 15308 16168 16684 16732 17266 18236 18512 19135 20176 20210 20855 20915 22360 22795 23140 24440 25220 26273 30616 32336 33368 33464 34532 36472 38270 40420 41710 41830 43165 44720 45590 46280 48880 49751 50440 52546 54223 54379 59267 61232 66736 66928 69064 72944 76540 80840 83420 83660 86330 91180 92560 99502 100880 105092 108446 108758 112229 118534 131365 138128 153080 161680 166840 167320 172660 179869 182360 196037 199004 210184 216892 217516 224458 237068 248755 262730 271115 271895 296335 306160 333680 334640 345320 359738 364720 371219 392074 398008 405751 420368 433784 435032 448916 474136 497510 525460 542230 543790 561145 592670 690640 719476 742438 784148 796016 811502 867568 870064 897832 899345 948272 980185 995020 1050920 1084460 1087580 1122290 1185340 1438952 1484876 1568296 1623004 1795664 1798690 1856095 1960370 1990040 2028755 2101840 2168920 2175160 2244580 2338297 2370680 2548481 2877904 2969752 3136592 3246008 3597380 3712190 3920740 3980080 4057510 4337840 4350320 4489160 4676594 4741360 4825847 5096962 5274763 5939504 6492016 7194760 7424380 7841480 8115020 8978320 9353188 9651694 10193924 10549526 11691485 12742405 14389520 14848760 15682960 16230040 17447293 18706376 19303388 20387848 21099052 23382970 24129235 25484810 26373815 29697520 32460080 34894586 37412752 38606776 40775696 42198104 46765940 48258470 50969620 52747630 69789172 77213552 84396208 87236465 93531880 96516940 101939240 105495260 139578344 174472930 187063760 193033880 203878480 210990520 226814809 279156688 348945860 386067760 421981040 453629618 697891720 907259236 1134074045 1395783440 1814518472 2268148090 3629036944 4536296180 9072592360 18145184720
• Sum of all divisors σ(n): 48506895360
• Sum of proper divisors (its aliquot sum) s(n): 30361710640
• 18145184720 is an abundant number, because the sum of its proper divisors (30361710640) is greater than itself. Its abundance is 12216525920

Bases of 18145184720

• Binary: 10000111001100010011000101111010000₂
• Hexadecimal: 0x439898BD0
• Base-36: 8C36A4W

Squares and roots of 18145184720

• 18145184720 squared (18145184720²) is 329247728522921478400
• 18145184720 cubed (18145184720³) is 5974260852688822979623490048000
• The square root of 18145184720 is 134704.0634873351
• The cube root of 18145184720 is 2627.7686751915

Scales and comparisons

• 18,145,184,720 seconds is equal to 576 years, 49 weeks, 6 days, 17 hours, 5 minutes, 20 seconds.
• To count from 1 to 18,145,184,720 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 18145184720 cubic inches would be around 219 feet tall.

Recreational maths with 18145184720

• 18145184720 backwards is 02748154181
• The number of decimal digits it has is: 11
• The sum of 18145184720's digits is 41
• More coming soon!