16981971993

Names of 16981971993

• Cardinal: 16981971993 can be written as Sixteen billion, nine hundred eighty-one million, nine hundred seventy-one thousand, nine hundred ninety-three.

Scientific notation

• Scientific notation: 1.6981971993 × 10¹⁰

Factors of 16981971993

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4397

Divisors of 16981971993

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 17 21 49 51 63 119 147 153 357 441 601 833 1071 1803 2499 3769 4207 5409 7497 10217 11307 12621 26383 29449 30651 33921 37863 64073 71519 79149 88347 91953 184681 192219 214557 237447 265041 448511 500633 554043 576657 643671 1345533 1501899 1662129 2265169 3139577 4036599 4505697 6795507 9418731 15856183 20386521 28256193 38507873 47568549 110993281 115523619 142705647 269555111 332979843 346570857 808665333 998939529 1886885777 2425995999 5660657331 16981971993
• Sum of all divisors σ(n): 30271124520
• Sum of proper divisors (its aliquot sum) s(n): 13289152527
• 16981971993 is a deficient number, because the sum of its proper divisors (13289152527) is less than itself. Its deficiency is 3692819466

Bases of 16981971993

• Binary: 1111110100001101000101010000011001₂
• Hexadecimal: 0x3F4345419
• Base-36: 7SUMLG9

Squares and roots of 16981971993

• 16981971993 squared (16981971993²) is 288387372771036392049
• 16981971993 cubed (16981971993³) is 4897386287532590811359885883657
• The square root of 16981971993 is 130314.8955146725
• The cube root of 16981971993 is 2570.3723459867

Scales and comparisons

• 16,981,971,993 seconds is equal to 539 years, 50 weeks, 4 days, 14 hours, 26 minutes, 33 seconds.
• To count from 1 to 16,981,971,993 would take you about one thousand and seventy-nine 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 16981971993 cubic inches would be around 214.2 feet tall.

Recreational maths with 16981971993

• 16981971993 backwards is 39917918961
• 16981971993 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 16981971993's digits is 63
• More coming soon!