18189885420

Names of 18189885420

• Cardinal: 18189885420 can be written as Eighteen billion, one hundred eighty-nine million, eight hundred eighty-five thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.818988542 × 10¹⁰

Factors of 18189885420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 16685

Divisors of 18189885420

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 17 18 20 21 27 28 30 34 35 36 42 45 51 54 60 63 68 70 84 85 90 102 105 108 119 126 135 140 153 170 180 189 204 210 238 252 255 270 289 306 315 340 357 378 420 459 476 510 540 578 595 612 630 714 756 765 867 918 945 1020 1071 1156 1190 1260 1428 1445 1530 1734 1785 1836 1890 2023 2142 2295 2380 2601 2890 3060 3213 3468 3570 3780 4046 4284 4335 4590 5202 5355 5780 6069 6426 7140 7803 8092 8670 9180 10115 10404 10710 12138 12852 13005 15606 16065 16651 17340 18207 20230 21420 24276 26010 30345 31212 32130 33302 36414 39015 40460 49953 52020 54621 60690 64260 66604 72828 78030 83255 91035 99906 109242 116557 121380 149859 156060 166510 182070 199812 218484 233114 249765 273105 283067 299718 333020 349671 364140 449577 466228 499530 546210 566134 582785 599436 699342 749295 849201 899154 999060 1049013 1092420 1132268 1165570 1398684 1415335 1498590 1698402 1748355 1798308 1981469 2098026 2247885 2331140 2547603 2830670 2997180 3147039 3396804 3496710 3962938 4196052 4246005 4495770 4812139 5095206 5245065 5661340 5944407 6294078 6993420 7642809 7925876 8492010 8991540 9624278 9907345 10190412 10490130 11888814 12588156 12738015 14436417 15285618 15735195 16984020 17833221 19248556 19814690 20980260 23777628 24060695 25476030 28872834 29722035 30571236 31470390 33684973 35666442 38214045 39629380 43309251 48121390 50952060 53499663 57745668 59444070 62940780 67369946 71332884 72182085 76428090 86618502 89166105 96242780 101054919 106999326 118888140 129927753 134739892 144364170 152856180 168424865 173237004 178332210 202109838 213998652 216546255 259855506 267498315 288728340 303164757 336849730 356664420 404219676 433092510 505274595 519711012 534996630 606329514 649638765 673699460 866185020 909494271 1010549190 1069993260 1212659028 1299277530 1515823785 1818988542 2021098380 2598555060 3031647570 3637977084 4547471355 6063295140 9094942710 18189885420
• Sum of all divisors σ(n): 68707484160
• Sum of proper divisors (its aliquot sum) s(n): 50517598740
• 18189885420 is an abundant number, because the sum of its proper divisors (50517598740) is greater than itself. Its abundance is 32327713320

Bases of 18189885420

• Binary: 10000111100001100111001111111101100₂
• Hexadecimal: 0x43C339FEC
• Base-36: 8CTSDF0

Squares and roots of 18189885420

• 18189885420 squared (18189885420²) is 330871931592728576400
• 18189885420 cubed (18189885420³) is 6018522524365810909875716088000
• The square root of 18189885420 is 134869.8832949743
• The cube root of 18189885420 is 2629.9247435181

Scales and comparisons

• 18,189,885,420 seconds is equal to 578 years, 19 weeks, 6 days, 1 hour, 57 minutes.
• To count from 1 to 18,189,885,420 would take you about one thousand, one hundred fifty-six 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 18189885420 cubic inches would be around 219.2 feet tall.

Recreational maths with 18189885420

• 18189885420 backwards is 02458898181
• 18189885420 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18189885420's digits is 54
• More coming soon!