2138949408

Names of 2138949408

• Cardinal: 2138949408 can be written as Two billion, one hundred thirty-eight million, nine hundred forty-nine thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.138949408 × 10⁹

Factors of 2138949408

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 351

Divisors of 2138949408

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 31 32 48 53 62 71 93 96 106 124 142 159 186 191 212 213 248 284 318 372 382 424 426 496 568 573 636 744 764 848 852 992 1136 1146 1272 1488 1528 1643 1696 1704 2201 2272 2292 2544 2976 3056 3286 3408 3763 4402 4584 4929 5088 5921 6112 6572 6603 6816 7526 8804 9168 9858 10123 11289 11842 13144 13206 13561 15052 17608 17763 18336 19716 20246 22578 23684 26288 26412 27122 30104 30369 35216 35526 39432 40492 40683 45156 47368 52576 52824 54244 60208 60738 70432 71052 78864 80984 81366 90312 94736 105648 108488 116653 120416 121476 142104 157728 161968 162732 180624 189472 211296 216976 233306 242952 284208 313813 323936 325464 349959 361248 420391 433952 466612 485904 568416 627626 650928 699918 718733 840782 933224 941439 971808 1255252 1261173 1301856 1399836 1437466 1681564 1866448 1882878 2156199 2510504 2522346 2799672 2874932 3363128 3732896 3765756 4312398 5021008 5044692 5599344 5749864 6726256 7531512 8624796 10042016 10089384 11198688 11499728 13452512 15063024 17249592 20178768 22280723 22999456 30126048 34499184 40357536 44561446 66842169 68998368 89122892 133684338 178245784 267368676 356491568 534737352 712983136 1069474704 2138949408
• Sum of all divisors σ(n): 6019743744
• Sum of proper divisors (its aliquot sum) s(n): 3880794336
• 2138949408 is an abundant number, because the sum of its proper divisors (3880794336) is greater than itself. Its abundance is 1741844928

Bases of 2138949408

• Binary: 1111111011111011100011100100000₂
• Hexadecimal: 0x7F7DC720
• Base-36: ZDH3XC

Squares and roots of 2138949408

• 2138949408 squared (2138949408²) is 4575104569983550464
• 2138949408 cubed (2138949408³) is 9785917211504409834710925312
• The square root of 2138949408 is 46248.7773676235
• The cube root of 2138949408 is 1288.4478272503

Scales and comparisons

• 2,138,949,408 seconds is equal to 68 years, 4 days, 8 hours, 36 minutes, 48 seconds.
• To count from 1 to 2,138,949,408 would take you about one hundred thirty-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 2138949408 cubic inches would be around 107.4 feet tall.

Recreational maths with 2138949408

• 2138949408 backwards is 8049498312
• 2138949408 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 2138949408's digits is 48
• More coming soon!