1618538729668

Names of 1618538729668

• Cardinal: 1618538729668 can be written as One trillion, six hundred eighteen billion, five hundred thirty-eight million, seven hundred twenty-nine thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 1.618538729668 × 10¹²

Factors of 1618538729668

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1380494

Divisors of 1618538729668

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 7 14 23 28 46 92 161 322 644 1823 3646 7292 12761 25522 41929 51044 83858 167716 293503 587006 1174012 1378639 2757278 5514556 9650473 19300946 31708697 38601892 63417394 126834788 221960879 443921758 887843516 2513258897 5026517794 10053035588 17592812279 35185624558 57804954631 70371249116 115609909262 231219818524 404634682417 809269364834 1618538729668
• Sum of all divisors σ(n): 3379675299840
• Sum of proper divisors (its aliquot sum) s(n): 1761136570172
• 1618538729668 is an abundant number, because the sum of its proper divisors (1761136570172) is greater than itself. Its abundance is 142597840504

Bases of 1618538729668

• Binary: 10111100011011000011011010001000011000100₂
• Hexadecimal: 0x178D86D10C4
• Base-36: KNJO64LG

Squares and roots of 1618538729668

• 1618538729668 squared (1618538729668²) is 2619667619435303183390224
• 1618538729668 cubed (1618538729668³) is 4240033500913209281956849590489965632
• The square root of 1618538729668 is 1272218.0354278901
• The cube root of 1618538729668 is 11741.0705773007

Scales and comparisons

• 1,618,538,729,668 seconds is equal to 51,464 years, 27 weeks, 2 days, 3 hours, 34 minutes, 28 seconds.
• To count from 1 to 1,618,538,729,668 would take you about one hundred twenty-eight thousand, six hundred sixty-one 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 1618538729668 cubic inches would be around 978.4 feet tall.

Recreational maths with 1618538729668

• 1618538729668 backwards is 8669278358161
• The number of decimal digits it has is: 13
• The sum of 1618538729668's digits is 70
• More coming soon!