1998821664

Names of 1998821664

• Cardinal: 1998821664 can be written as One billion, nine hundred ninety-eight million, eight hundred twenty-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 1.998821664 × 10⁹

Factors of 1998821664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2158

Divisors of 1998821664

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 72 84 96 108 112 126 144 167 168 189 216 224 252 288 334 336 378 432 501 504 668 672 756 864 1002 1008 1169 1336 1503 1512 1979 2004 2016 2338 2672 3006 3024 3507 3958 4008 4509 4676 5344 5937 6012 6048 7014 7916 8016 9018 9352 10521 11874 12024 13853 14028 15832 16032 17811 18036 18704 21042 23748 24048 27706 28056 31563 31664 35622 36072 37408 41559 42084 47496 48096 53433 55412 56112 63126 63328 71244 72144 83118 84168 94992 106866 110824 112224 124677 126252 142488 144288 166236 168336 189984 213732 221648 249354 252504 284976 330493 332472 336672 374031 427464 443296 498708 505008 569952 660986 664944 748062 854928 991479 997416 1010016 1321972 1329888 1496124 1709856 1982958 1994832 2313451 2643944 2974437 2992248 3965916 3989664 4626902 5287888 5948874 5984496 6940353 7931832 8923311 9253804 10575776 11897748 11968992 13880706 15863664 17846622 18507608 20821059 23795496 27761412 31727328 35693244 37015216 41642118 47590992 55522824 62463177 71386488 74030432 83284236 95181984 111045648 124926354 142772976 166568472 222091296 249852708 285545952 333136944 499705416 666273888 999410832 1998821664
• Sum of all divisors σ(n): 6706022400
• Sum of proper divisors (its aliquot sum) s(n): 4707200736
• 1998821664 is an abundant number, because the sum of its proper divisors (4707200736) is greater than itself. Its abundance is 2708379072

Bases of 1998821664

• Binary: 1110111001000111001100100100000₂
• Hexadecimal: 0x77239920
• Base-36: X21OO0

Squares and roots of 1998821664

• 1998821664 squared (1998821664²) is 3995288044475728896
• 1998821664 cubed (1998821664³) is 7985868297218282439515602944
• The square root of 1998821664 is 44708.1834119885
• The cube root of 1998821664 is 1259.6735662303

Scales and comparisons

• 1,998,821,664 seconds is equal to 63 years, 28 weeks, 6 days, 12 hours, 14 minutes, 24 seconds.
• To count from 1 to 1,998,821,664 would take you about one hundred twenty-seven 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 1998821664 cubic inches would be around 105 feet tall.

Recreational maths with 1998821664

• 1998821664 backwards is 4661288991
• 1998821664 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1998821664's digits is 54
• More coming soon!