1991142970380

Names of 1991142970380

• Cardinal: 1991142970380 can be written as One trillion, nine hundred ninety-one billion, one hundred forty-two million, nine hundred seventy thousand, three hundred eighty.

Scientific notation

• Scientific notation: 1.99114297038 × 10¹²

Factors of 1991142970380

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1229100609

Divisors of 1991142970380

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 270 324 405 540 810 1620 1229100599 2458201198 3687301797 4916402396 6145502995 7374603594 11061905391 12291005990 14749207188 18436508985 22123810782 24582011980 33185716173 36873017970 44247621564 55309526955 66371432346 73746035940 99557148519 110619053910 132742864692 165928580865 199114297038 221238107820 331857161730 398228594076 497785742595 663714323460 995571485190 1991142970380
• Sum of all divisors σ(n): 6246289249200
• Sum of proper divisors (its aliquot sum) s(n): 4255146278820
• 1991142970380 is an abundant number, because the sum of its proper divisors (4255146278820) is greater than itself. Its abundance is 2264003308440

Bases of 1991142970380

• Binary: 11100111110011001010111101001010000001100₂
• Hexadecimal: 0x1CF995E940C
• Base-36: PEPV44R0

Squares and roots of 1991142970380

• 1991142970380 squared (1991142970380²) is 3964650328493689557344400
• 1991142970380 cubed (1991142970380³) is 7894185631594967776296315960658872000
• The square root of 1991142970380 is 1411078.6549232471
• The cube root of 1991142970380 is 12580.5843797189

Scales and comparisons

• 1,991,142,970,380 seconds is equal to 63,312 years, 9 weeks, 5 days, 5 hours, 33 minutes.
• To count from 1 to 1,991,142,970,380 would take you about one hundred fifty-eight thousand, two hundred eighty 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 1991142970380 cubic inches would be around 1048.4 feet tall.

Recreational maths with 1991142970380

• 1991142970380 backwards is 0830792411991
• 1991142970380 is a Harshad number.
• The number of decimal digits it has is: 13
• The sum of 1991142970380's digits is 54
• More coming soon!