1990745729818

Names of 1990745729818

• Cardinal: 1990745729818 can be written as One trillion, nine hundred ninety billion, seven hundred forty-five million, seven hundred twenty-nine thousand, eight hundred eighteen.

Scientific notation

• Scientific notation: 1.990745729818 × 10¹²

Factors of 1990745729818

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1253

Divisors of 1990745729818

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 23 41 46 82 529 943 1058 1187 1681 1886 2374 3362 12167 21689 24334 27301 38663 43378 48667 54602 68921 77326 97334 137842 498847 627923 889249 997694 1119341 1255846 1585183 1778498 1995347 2238682 3170366 3990694 14442229 20452727 25744843 28884458 36459209 40905454 45892981 51489686 72918418 81809227 91785962 163618454 592131389 838561807 1055538563 1184262778 1677123614 1881612221 2111077126 3763224442 24277386949 43277081083 48554773898 86554162166 995372864909 1990745729818
• Sum of all divisors σ(n): 3202580747520
• Sum of proper divisors (its aliquot sum) s(n): 1211835017702
• 1990745729818 is a deficient number, because the sum of its proper divisors (1211835017702) is less than itself. Its deficiency is 778910712116

Bases of 1990745729818

• Binary: 11100111110000001101100010010101100011010₂
• Hexadecimal: 0x1CF81B12B1A
• Base-36: PEJALVYY

Squares and roots of 1990745729818

• 1990745729818 squared (1990745729818²) is 3963068560788601454313124
• 1990745729818 cubed (1990745729818³) is 7889461814365875299782116221275531432
• The square root of 1990745729818 is 1410937.8901347855
• The cube root of 1990745729818 is 12579.7476993361

Scales and comparisons

• 1,990,745,729,818 seconds is equal to 63,299 years, 28 weeks, 6 days, 12 hours, 56 minutes, 58 seconds.
• To count from 1 to 1,990,745,729,818 would take you about one hundred fifty-eight thousand, two hundred forty-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 1990745729818 cubic inches would be around 1048.3 feet tall.

Recreational maths with 1990745729818

• 1990745729818 backwards is 8189275470991
• The number of decimal digits it has is: 13
• The sum of 1990745729818's digits is 70
• More coming soon!