138609464868

Names of 138609464868

• Cardinal: 138609464868 can be written as One hundred thirty-eight billion, six hundred nine million, four hundred sixty-four thousand, eight hundred sixty-eight.

Scientific notation

• Scientific notation: 1.38609464868 × 10¹¹

Factors of 138609464868

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 54926

Divisors of 138609464868

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 108 126 189 252 378 756 3571 7142 10713 14284 21426 24997 32139 42852 49994 51343 64278 74991 96417 99988 102686 128556 149982 154029 192834 205372 224973 299964 308058 359401 385668 449946 462087 616116 674919 718802 899892 924174 1078203 1349838 1386261 1437604 1848348 2156406 2699676 2772522 3234609 4312812 5545044 6469218 9703827 12938436 19407654 38815308 183345853 366691706 550037559 733383412 1100075118 1283420971 1650112677 2200150236 2566841942 3300225354 3850262913 4950338031 5133683884 6600450708 7700525826 9900676062 11550788739 15401051652 19801352124 23101577478 34652366217 46203154956 69304732434 138609464868
• Sum of all divisors σ(n): 410817720320
• Sum of proper divisors (its aliquot sum) s(n): 272208255452
• 138609464868 is an abundant number, because the sum of its proper divisors (272208255452) is greater than itself. Its abundance is 133598790584

Bases of 138609464868

• Binary: 10000001000101110001001001011000100100₂
• Hexadecimal: 0x2045C49624
• Base-36: 1ROCHVL0

Squares and roots of 138609464868

• 138609464868 squared (138609464868²) is 19212583750993326257424
• 138609464868 cubed (138609464868³) is 2663045952456817115980873852180032
• The square root of 138609464868 is 372302.9208426921
• The cube root of 138609464868 is 5175.2455700313

Scales and comparisons

• 138,609,464,868 seconds is equal to 4,407 years, 18 weeks, 2 days, 5 hours, 7 minutes, 48 seconds.
• To count from 1 to 138,609,464,868 would take you about eight thousand, eight hundred fourteen 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 138609464868 cubic inches would be around 431.3 feet tall.

Recreational maths with 138609464868

• 138609464868 backwards is 868464906831
• 138609464868 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138609464868's digits is 63
• More coming soon!