18381007557819

Names of 18381007557819

• Cardinal: 18381007557819 can be written as Eighteen trillion, three hundred eighty-one billion, seven million, five hundred fifty-seven thousand, eight hundred nineteen.

Scientific notation

• Scientific notation: 1.8381007557819 × 10¹³

Factors of 18381007557819

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 465

Divisors of 18381007557819

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 9 27 149 313 447 939 1341 2817 4023 8451 22201 46637 66603 97969 139911 199809 293907 419733 599427 881721 1259199 2645163 6948913 14597381 20846739 30664297 43792143 62540217 91992891 131376429 187620651 275978673 394129287 827936019 2175009769 4568980253 6525029307 13706940759 19575087921 41120822277 58725263763 123362466831 680778057697 2042334173091 6127002519273 18381007557819
• Sum of all divisors σ(n): 27502977023200
• Sum of proper divisors (its aliquot sum) s(n): 9121969465381
• 18381007557819 is a deficient number, because the sum of its proper divisors (9121969465381) is less than itself. Its deficiency is 9259038092438

Bases of 18381007557819

• Binary: 100001011011110101001011011010001010010111011₂
• Hexadecimal: 0x10B7A96D14BB
• Base-36: 6IK49BE0R

Squares and roots of 18381007557819

• 18381007557819 squared (18381007557819²) is 337861438840599198628036761
• 18381007557819 cubed (18381007557819³) is 6210233660824655706800538479691164984259
• The square root of 18381007557819 is 4287307.7283790815
• The cube root of 18381007557819 is 26391.0359248027

Scales and comparisons

• 18,381,007,557,819 seconds is equal to 584,459 years, 9 weeks, 4 days, 43 minutes, 39 seconds.
• To count from 1 to 18,381,007,557,819 would take you about one million, four hundred sixty-one thousand, one hundred forty-seven 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 18381007557819 cubic inches would be around 2199.3 feet tall.

Recreational maths with 18381007557819

• 18381007557819 backwards is 91875570018381
• The number of decimal digits it has is: 14
• The sum of 18381007557819's digits is 63
• More coming soon!