18889189440

Names of 18889189440

• Cardinal: 18889189440 can be written as Eighteen billion, eight hundred eighty-nine million, one hundred eighty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.888918944 × 10¹⁰

Factors of 18889189440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 61731

Divisors of 18889189440

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 29 30 32 33 40 44 48 55 58 60 64 66 80 87 88 96 110 116 120 132 145 160 165 174 176 192 220 232 240 264 290 319 320 330 348 352 435 440 464 480 528 580 638 660 696 704 870 880 928 957 960 1056 1160 1276 1320 1392 1595 1740 1760 1856 1914 2112 2320 2552 2640 2784 3190 3480 3520 3828 4640 4785 5104 5280 5568 6380 6960 7656 9280 9570 10208 10560 12760 13920 15312 19140 20416 25520 27840 30624 38280 51040 61248 61681 76560 102080 123362 153120 185043 246724 306240 308405 370086 493448 616810 678491 740172 925215 986896 1233620 1356982 1480344 1788749 1850430 1973792 2035473 2467240 2713964 2960688 3392455 3577498 3700860 3947584 4070946 4934480 5366247 5427928 5921376 6784910 7154996 7401720 8141892 8943745 9868960 10177365 10732494 10855856 11842752 13569820 14309992 14803440 16283784 17887490 19676239 19737920 20354730 21464988 21711712 26831235 27139640 28619984 29606880 32567568 35774980 39352478 40709460 42929976 43423424 53662470 54279280 57239968 59028717 59213760 65135136 71549960 78704956 81418920 85859952 98381195 107324940 108558560 114479936 118057434 130270272 143099920 157409912 162837840 171719904 196762390 214649880 217117120 236114868 286199840 295143585 314819824 325675680 343439808 393524780 429299760 472229736 572399680 590287170 629639648 651351360 787049560 858599520 944459472 1180574340 1259279296 1574099120 1717199040 1888918944 2361148680 3148198240 3777837888 4722297360 6296396480 9444594720 18889189440
• Sum of all divisors σ(n): 67682424960
• Sum of proper divisors (its aliquot sum) s(n): 48793235520
• 18889189440 is an abundant number, because the sum of its proper divisors (48793235520) is greater than itself. Its abundance is 29904046080

Bases of 18889189440

• Binary: 10001100101111000100010100001000000₂
• Hexadecimal: 0x465E22840
• Base-36: 8OE4VUO

Squares and roots of 18889189440

• 18889189440 squared (18889189440²) is 356801477700207513600
• 18889189440 cubed (18889189440³) is 6739690704751155251701776384000
• The square root of 18889189440 is 137437.9475981799
• The cube root of 18889189440 is 2663.2040385513

Scales and comparisons

• 18,889,189,440 seconds is equal to 600 years, 32 weeks, 21 hours, 4 minutes.
• To count from 1 to 18,889,189,440 would take you about one thousand, two hundred one 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 18889189440 cubic inches would be around 221.9 feet tall.

Recreational maths with 18889189440

• 18889189440 backwards is 04498198881
• 18889189440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18889189440's digits is 60
• More coming soon!