1681213440

Names of 1681213440

• Cardinal: 1681213440 can be written as One billion, six hundred eighty-one million, two hundred thirteen thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.68121344 × 10⁹

Factors of 1681213440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 54737

Divisors of 1681213440

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 640 768 960 1024 1280 1536 1920 2048 2560 3072 3840 5120 6144 7680 10240 15360 30720 54727 109454 164181 218908 273635 328362 437816 547270 656724 820905 875632 1094540 1313448 1641810 1751264 2189080 2626896 3283620 3502528 4378160 5253792 6567240 7005056 8756320 10507584 13134480 14010112 17512640 21015168 26268960 28020224 35025280 42030336 52537920 56040448 70050560 84060672 105075840 112080896 140101120 168121344 210151680 280202240 336242688 420303360 560404480 840606720 1681213440
• Sum of all divisors σ(n): 5378667840
• Sum of proper divisors (its aliquot sum) s(n): 3697454400
• 1681213440 is an abundant number, because the sum of its proper divisors (3697454400) is greater than itself. Its abundance is 2016240960

Bases of 1681213440

• Binary: 1100100001101010100100000000000₂
• Hexadecimal: 0x64354800
• Base-36: RSY8LC

Squares and roots of 1681213440

• 1681213440 squared (1681213440²) is 2826478630836633600
• 1681213440 cubed (1681213440³) is 4751913862035346852675584000
• The square root of 1681213440 is 41002.6028442097
• The cube root of 1681213440 is 1189.0705356651

Scales and comparisons

• 1,681,213,440 seconds is equal to 53 years, 23 weeks, 5 days, 11 hours, 44 minutes.
• To count from 1 to 1,681,213,440 would take you about one hundred six 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 1681213440 cubic inches would be around 99.1 feet tall.

Recreational maths with 1681213440

• 1681213440 backwards is 0443121861
• 1681213440 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1681213440's digits is 30
• More coming soon!