1388643879817580638

Names of 1388643879817580638

• Cardinal: 1388643879817580638 can be written as One quintillion, three hundred eighty-eight quadrillion, six hundred forty-three trillion, eight hundred seventy-nine billion, eight hundred seventeen million, five hundred eighty thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 1.388643879817580638 × 10¹⁸

Factors of 1388643879817580638

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 22128824977

Divisors of 1388643879817580638

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 7 14 107 163 214 257 326 514 749 1141 1498 1799 2282 3598 17441 27499 34882 41891 54998 83782 122087 192493 244174 293237 384986 586474 4482337 8964674 31376359 62752718 22128824441 44257648882 154901771087 309803542174 2367784215187 3606998383883 4735568430374 5687107881337 7213996767766 11374215762674 16574489506309 25248988687181 33148979012618 39809755169359 50497977374362 79619510338718 385948827075481 608520543303059 771897654150962 926998584657931 1217041086606118 1853997169315862 2701641789528367 4259643803121413 5403283579056734 6488990092605517 8519287606242826 12977980185211034 99188848558398617 198377697116797234 694321939908790319 1388643879817580638
• Sum of all divisors σ(n): 2426928012895431168
• Sum of proper divisors (its aliquot sum) s(n): 1038284133077850530
• 1388643879817580638 is a deficient number, because the sum of its proper divisors (1038284133077850530) is less than itself. Its deficiency is 350359746739730108

Bases of 1388643879817580638

• Binary: 1001101000101011101000100000001011000000011000001000001011110₂
• Hexadecimal: 0x13457440580C105E
• Base-36: AJT567LSWEAM

Squares and roots of 1388643879817580638

• 1388643879817580638 squared (1388643879817580638²) is 1928331824954823338763667703632487044
• 1388643879817580638 cubed (1388643879817580638³) is 2677766186980981644622779370722928771553247350960254072
• The square root of 1388643879817580638 is 1178407348.8474096571
• The cube root of 1388643879817580638 is 1115655.9727539173

Scales and comparisons

• 1,388,643,879,817,580,638 seconds is equal to 44,154,580,020 years, 34 weeks, 7 hours, 3 minutes, 58 seconds.
• To count from 1 to 1,388,643,879,817,580,638 would take you about one hundred fifty-four billion, five hundred forty-one million, thirty thousand and seventy-two 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 1388643879817580638 cubic inches would be around 92971.3 feet tall.

Recreational maths with 1388643879817580638

• 1388643879817580638 backwards is 8360857189783468831
• The number of decimal digits it has is: 19
• The sum of 1388643879817580638's digits is 103
• More coming soon!