18389744928

Names of 18389744928

• Cardinal: 18389744928 can be written as Eighteen billion, three hundred eighty-nine million, seven hundred forty-four thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8389744928 × 10¹⁰

Factors of 18389744928

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 6412

Divisors of 18389744928

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 27 32 36 38 48 54 57 59 72 76 81 96 108 114 118 144 152 162 171 177 216 228 236 288 304 324 342 354 432 456 472 513 531 608 648 684 708 864 912 944 1026 1062 1121 1296 1368 1416 1539 1593 1824 1888 2052 2124 2242 2592 2736 2832 3078 3186 3363 4104 4248 4484 4779 5472 5664 6156 6329 6372 6726 8208 8496 8968 9558 10089 12312 12658 12744 13452 16416 16992 17936 18987 19116 20178 24624 25316 25488 26904 30267 35872 37974 38232 40356 49248 50632 50976 53808 56961 60534 75948 76464 80712 90801 101264 107616 113922 120251 121068 151896 152928 161424 170883 181602 202528 227844 240502 242136 303792 322848 341766 360753 363204 373411 455688 481004 484272 512649 607584 683532 721506 726408 746822 911376 962008 968544 1025298 1082259 1120233 1367064 1443012 1452816 1493644 1822752 1924016 2050596 2164518 2240466 2734128 2886024 2905632 2987288 3246777 3360699 3848032 4101192 4329036 4480932 5468256 5772048 5974576 6493554 6721398 7094809 8202384 8658072 8961864 9740331 10082097 11544096 11949152 12987108 13442796 14189618 16404768 17316144 17923728 19480662 20164194 21284427 25974216 26885592 28379236 30246291 34632288 35847456 38961324 40328388 42568854 51948432 53771184 56758472 60492582 63853281 77922648 80656776 85137708 103896864 107542368 113516944 120985164 127706562 155845296 161313552 170275416 191559843 227033888 241970328 255413124 311690592 322627104 340550832 383119686 483940656 510826248 574679529 681101664 766239372 967881312 1021652496 1149359058 1532478744 2043304992 2298718116 3064957488 4597436232 6129914976 9194872464 18389744928
• Sum of all divisors σ(n): 57904308000
• Sum of proper divisors (its aliquot sum) s(n): 39514563072
• 18389744928 is an abundant number, because the sum of its proper divisors (39514563072) is greater than itself. Its abundance is 21124818144

Bases of 18389744928

• Binary: 10001001000000111010011110100100000₂
• Hexadecimal: 0x4481D3D20
• Base-36: 8G4S200

Squares and roots of 18389744928

• 18389744928 squared (18389744928²) is 338182718516901725184
• 18389744928 cubed (18389744928³) is 6219093932583445182976913866752
• The square root of 18389744928 is 135608.7936971641
• The cube root of 18389744928 is 2639.5216902055

Scales and comparisons

• 18,389,744,928 seconds is equal to 584 years, 38 weeks, 2 days, 6 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,389,744,928 would take you about one thousand, one hundred sixty-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 18389744928 cubic inches would be around 220 feet tall.

Recreational maths with 18389744928

• 18389744928 backwards is 82944798381
• The number of decimal digits it has is: 11
• The sum of 18389744928's digits is 63
• More coming soon!