18909418320

Names of 18909418320

• Cardinal: 18909418320 can be written as Eighteen billion, nine hundred nine million, four hundred eighteen thousand, three hundred twenty.

Scientific notation

• Scientific notation: 1.890941832 × 10¹⁰

Factors of 18909418320

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 54661

Divisors of 18909418320

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 36 37 39 40 45 48 52 60 65 72 74 78 80 90 104 111 117 120 130 144 148 156 180 185 195 208 222 234 240 260 296 312 333 360 370 390 444 468 481 520 555 585 592 624 666 720 740 780 888 936 962 1040 1110 1170 1332 1443 1480 1560 1665 1776 1872 1924 2220 2340 2405 2664 2886 2960 3120 3330 3848 4329 4440 4680 4810 5328 5772 6660 7215 7696 8658 8880 9360 9620 11544 13320 14430 17316 19240 21645 23088 26640 28860 34632 38480 43290 54601 57720 69264 86580 109202 115440 163803 173160 218404 273005 327606 346320 436808 491409 546010 655212 709813 819015 873616 982818 1092020 1310424 1419626 1638030 1965636 2020237 2129439 2184040 2457045 2620848 2839252 3276060 3549065 3931272 4040474 4258878 4368080 4914090 5678504 6060711 6388317 6552120 7098130 7862544 8080948 8517756 9828180 10101185 10647195 11357008 12121422 12776634 13104240 14196260 16161896 17035512 18182133 19656360 20202370 21294390 24242844 25553268 26263081 28392520 30303555 31941585 32323792 34071024 36364266 39312720 40404740 42588780 48485688 51106536 52526162 56785040 60607110 63883170 72728532 78789243 80809480 85177560 90910665 96971376 102213072 105052324 121214220 127766340 131315405 145457064 157578486 161618960 170355120 181821330 210104648 236367729 242428440 255532680 262630810 290914128 315156972 363642660 393946215 420209296 472735458 484856880 511065360 525261620 630313944 727285320 787892430 945470916 1050523240 1181838645 1260627888 1454570640 1575784860 1890941832 2101046480 2363677290 3151569720 3781883664 4727354580 6303139440 9454709160 18909418320
• Sum of all divisors σ(n): 70238702352
• Sum of proper divisors (its aliquot sum) s(n): 51329284032
• 18909418320 is an abundant number, because the sum of its proper divisors (51329284032) is greater than itself. Its abundance is 32419865712

Bases of 18909418320

• Binary: 10001100111000101101101001101010000₂
• Hexadecimal: 0x46716D350
• Base-36: 8OQ6GK0

Squares and roots of 18909418320

• 18909418320 squared (18909418320²) is 357566101200751622400
• 18909418320 cubed (18909418320³) is 6761366984656466726380282368000
• The square root of 18909418320 is 137511.5206809961
• The cube root of 18909418320 is 2664.1543954561

Scales and comparisons

• 18,909,418,320 seconds is equal to 601 years, 13 weeks, 4 days, 12 minutes.
• To count from 1 to 18,909,418,320 would take you about one thousand, two hundred two 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 18909418320 cubic inches would be around 222 feet tall.

Recreational maths with 18909418320

• 18909418320 backwards is 02381490981
• 18909418320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18909418320's digits is 45
• More coming soon!