1815438947855

Names of 1815438947855

• Cardinal: 1815438947855 can be written as One trillion, eight hundred fifteen billion, four hundred thirty-eight million, nine hundred forty-seven thousand, eight hundred fifty-five.

Scientific notation

• Scientific notation: 1.815438947855 × 10¹²

Factors of 1815438947855

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2788

Divisors of 1815438947855

• Number of divisors d(n): 96
• Complete list of divisors:
  1 5 13 31 65 127 155 169 229 403 635 845 1145 1651 2015 2383 2977 3937 5239 7099 8255 11915 14885 19685 21463 26195 29083 30979 35495 38701 51181 73873 92287 107315 145415 154895 193505 255905 302641 369365 378079 402727 461435 545707 665353 901573 960349 1199731 1513205 1890395 2013635 2728535 3326765 3934333 4507865 4801745 4915027 5998655 7094191 9381871 11720449 12484537 16916917 19671665 24575135 35470955 46909355 51146329 58602245 62422685 69304789 84584585 92224483 121964323 152365837 219919921 255731645 346523945 461122415 609821615 761829185 900962257 1099599605 1585536199 2148448459 2858958973 4504811285 7927680995 10742242295 11712509341 14294794865 27929829967 58562546705 139649149835 363087789571 1815438947855
• Sum of all divisors σ(n): 2466018754560
• Sum of proper divisors (its aliquot sum) s(n): 650579806705
• 1815438947855 is a deficient number, because the sum of its proper divisors (650579806705) is less than itself. Its deficiency is 1164859141150

Bases of 1815438947855

• Binary: 11010011010110000100101111111011000001111₂
• Hexadecimal: 0x1A6B097F60F
• Base-36: N601H5AN

Squares and roots of 1815438947855

• 1815438947855 squared (1815438947855²) is 3295818573388869409101025
• 1815438947855 cubed (1815438947855³) is 5983357403194056181826360387402051375
• The square root of 1815438947855 is 1347382.2575108373
• The cube root of 1815438947855 is 12199.0838420131

Scales and comparisons

• 1,815,438,947,855 seconds is equal to 57,725 years, 17 weeks, 5 days, 20 hours, 37 minutes, 35 seconds.
• To count from 1 to 1,815,438,947,855 would take you about one hundred forty-four thousand, three hundred thirteen 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 1815438947855 cubic inches would be around 1016.6 feet tall.

Recreational maths with 1815438947855

• 1815438947855 backwards is 5587498345181
• The number of decimal digits it has is: 13
• The sum of 1815438947855's digits is 68
• More coming soon!