18185442990
18,185,442,990 is an even composite number composed of seven prime numbers multiplied together.
What does the number 18185442990 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 128 divisors.
18185442990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 18185442990:
2 × 3 × 5 × 11 × 13 × 41 × 103391
See below for interesting mathematical facts about the number 18185442990 from the Numbermatics database.
Names of 18185442990
- Cardinal: 18185442990 can be written as Eighteen billion, one hundred eighty-five million, four hundred forty-two thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 1.818544299 × 1010
Factors of 18185442990
Divisors of 18185442990
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 10 11 13 15 22 26 30 33 39 41 55 65 66 78 82 110 123 130 143 165 195 205 246 286 330 390 410 429 451 533 615 715 858 902 1066 1230 1353 1430 1599 2145 2255 2665 2706 3198 4290 4510 5330 5863 6765 7995 11726 13530 15990 17589 29315 35178 58630 87945 103391 175890 206782 310173 516955 620346 1033910 1137301 1344083 1550865 2274602 2688166 3101730 3411903 4032249 4239031 5686505 6720415 6823806 8064498 8478062 11373010 12717093 13440830 14784913 17059515 20161245 21195155 25434186 29569826 34119030 40322490 42390310 44354739 46629341 55107403 63585465 73924565 88709478 93258682 110214806 127170930 139888023 147849130 165322209 221773695 233146705 275537015 279776046 330644418 443547390 466293410 551074030 606181433 699440115 826611045 1212362866 1398880230 1653222090 1818544299 3030907165 3637088598 6061814330 9092721495 18185442990
- Sum of all divisors σ(n): 52526444544
- Sum of proper divisors (its aliquot sum) s(n): 34341001554
- 18185442990 is an abundant number, because the sum of its proper divisors (34341001554) is greater than itself. Its abundance is 16155558564
Bases of 18185442990
- Binary: 100001110111110111111010110101011102
- Hexadecimal: 0x43BEFD6AE
- Base-36: 8CR55M6
Squares and roots of 18185442990
- 18185442990 squared (181854429902) is 330710336742540140100
- 18185442990 cubed (181854429903) is 6014113975035166025575162899000
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The
square root of 18185442990 is 134853.4129712705 -
The
cube root of 18185442990 is 2629.7106280437
Scales and comparisons
How big is 18185442990?- 18,185,442,990 seconds is equal to 578 years, 12 weeks, 3 days, 15 hours, 56 minutes, 30 seconds.
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To count from 1 to 18,185,442,990 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 18185442990 cubic inches would be around 219.1 feet tall.
Recreational maths with 18185442990
- 18185442990 backwards is 09924458181
- The number of decimal digits it has is: 11
- The sum of 18185442990's digits is 51
- More coming soon!
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