18838313640

Names of 18838313640

• Cardinal: 18838313640 can be written as Eighteen billion, eight hundred thirty-eight million, three hundred thirteen thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.883831364 × 10¹⁰

Factors of 18838313640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 329174

Divisors of 18838313640

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 53 54 60 72 90 106 108 120 135 159 180 212 216 265 270 318 360 424 477 530 540 636 795 954 1060 1080 1272 1431 1590 1908 2120 2385 2862 3180 3816 4770 5724 6360 7155 9540 11448 14310 19080 28620 57240 329111 658222 987333 1316444 1645555 1974666 2632888 2961999 3291110 3949332 4936665 5923998 6582220 7898664 8885997 9873330 11847996 13164440 14809995 17442883 17771994 19746660 23695992 29619990 34885766 35543988 39493320 44429985 52328649 59239980 69771532 71087976 87214415 88859970 104657298 118479960 139543064 156985947 174428830 177719940 209314596 261643245 313971894 348857660 355439880 418629192 470957841 523286490 627943788 697715320 784929735 941915682 1046572980 1255887576 1569859470 1883831364 2093145960 2354789205 3139718940 3767662728 4709578410 6279437880 9419156820 18838313640
• Sum of all divisors σ(n): 63979372800
• Sum of proper divisors (its aliquot sum) s(n): 45141059160
• 18838313640 is an abundant number, because the sum of its proper divisors (45141059160) is greater than itself. Its abundance is 26302745520

Bases of 18838313640

• Binary: 10001100010110110011101101010101000₂
• Hexadecimal: 0x462D9DAA8
• Base-36: 8NJUFU0

Squares and roots of 18838313640

• 18838313640 squared (18838313640²) is 354882060799010049600
• 18838313640 cubed (18838313640³) is 6685379566541300315876756544000
• The square root of 18838313640 is 137252.7363661651
• The cube root of 18838313640 is 2660.8108802271

Scales and comparisons

• 18,838,313,640 seconds is equal to 599 years, 54 minutes.
• To count from 1 to 18,838,313,640 would take you about one thousand, one hundred ninety-eight 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 18838313640 cubic inches would be around 221.7 feet tall.

Recreational maths with 18838313640

• 18838313640 backwards is 04631383881
• 18838313640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18838313640's digits is 45
• More coming soon!