1919921920

Names of 1919921920

• Cardinal: 1919921920 can be written as One billion, nine hundred nineteen million, nine hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.91992192 × 10⁹

Factors of 1919921920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 4387

Divisors of 1919921920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 80 98 112 128 140 160 196 224 245 256 280 320 343 392 448 490 560 640 686 784 896 980 1120 1280 1372 1568 1715 1792 1960 2240 2744 3136 3430 3920 4373 4480 5488 6272 6860 7840 8746 8960 10976 12544 13720 15680 17492 21865 21952 27440 30611 31360 34984 43730 43904 54880 61222 62720 69968 87460 87808 109760 122444 139936 153055 174920 214277 219520 244888 279872 306110 349840 428554 439040 489776 559744 612220 699680 857108 979552 1071385 1119488 1224440 1399360 1499939 1714216 1959104 2142770 2448880 2798720 2999878 3428432 3918208 4285540 4897760 5597440 5999756 6856864 7499695 7836416 8571080 9795520 11999512 13713728 14999390 17142160 19591040 23999024 27427456 29998780 34284320 39182080 47998048 54854912 59997560 68568640 95996096 119995120 137137280 191992192 239990240 274274560 383984384 479980480 959960960 1919921920
• Sum of all divisors σ(n): 5364273600
• Sum of proper divisors (its aliquot sum) s(n): 3444351680
• 1919921920 is an abundant number, because the sum of its proper divisors (3444351680) is greater than itself. Its abundance is 1524429760

Bases of 1919921920

• Binary: 1110010011011111010111100000000₂
• Hexadecimal: 0x726FAF00
• Base-36: VR2L8G

Squares and roots of 1919921920

• 1919921920 squared (1919921920²) is 3686100178896486400
• 1919921920 cubed (1919921920³) is 7077024532779285650341888000
• The square root of 1919921920 is 43816.9136293281
• The cube root of 1919921920 is 1242.8761540479

Scales and comparisons

• 1,919,921,920 seconds is equal to 61 years, 2 weeks, 3 days, 7 hours, 38 minutes, 40 seconds.
• To count from 1 to 1,919,921,920 would take you about one hundred twenty-two 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 1919921920 cubic inches would be around 103.6 feet tall.

Recreational maths with 1919921920

• 1919921920 backwards is 0291299191
• The number of decimal digits it has is: 10
• The sum of 1919921920's digits is 43
• More coming soon!