18007819872

Names of 18007819872

• Cardinal: 18007819872 can be written as Eighteen billion, seven million, eight hundred nineteen thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.8007819872 × 10¹⁰

Factors of 18007819872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 314

Divisors of 18007819872

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 73 84 96 98 112 146 147 168 196 219 224 229 292 294 336 392 438 458 511 584 588 672 687 784 876 916 1022 1168 1176 1374 1533 1568 1603 1752 1832 2044 2336 2352 2748 3066 3206 3504 3577 3664 4088 4704 4809 5496 6132 6412 7008 7154 7328 8176 9618 10731 10992 11221 12264 12824 14308 16352 16717 19236 21462 21984 22442 24528 25648 28616 33434 33663 38472 42924 44884 49056 50151 51296 52441 57232 66868 67326 76944 85848 89768 100302 104882 114464 117019 133736 134652 153888 157323 171696 179536 200604 209764 234038 267472 269304 314646 343392 351057 359072 367087 401208 419528 468076 534944 538608 629292 702114 734174 802416 819133 839056 936152 1077216 1101261 1258584 1404228 1468348 1604832 1638266 1678112 1872304 2202522 2457399 2517168 2569609 2808456 2936696 3276532 3744608 3828193 4405044 4914798 5034336 5139218 5616912 5873392 6553064 7656386 7708827 8810088 9829596 10278436 11233824 11484579 11746784 13106128 15312772 15417654 17620176 19659192 20556872 22969158 26212256 26797351 30625544 30835308 35240352 39318384 41113744 45938316 53594702 61251088 61670616 78636768 80392053 82227488 91876632 107189404 122502176 123341232 160784106 183753264 187581457 214378808 246682464 321568212 367506528 375162914 428757616 562744371 643136424 750325828 857515232 1125488742 1286272848 1500651656 2250977484 2572545696 3001303312 4501954968 6002606624 9003909936 18007819872
• Sum of all divisors σ(n): 55985902056
• Sum of proper divisors (its aliquot sum) s(n): 37978082184
• 18007819872 is an abundant number, because the sum of its proper divisors (37978082184) is greater than itself. Its abundance is 19970262312

Bases of 18007819872

• Binary: 10000110001010110011000011001100000₂
• Hexadecimal: 0x431598660
• Base-36: 89TE2QO

Squares and roots of 18007819872

• 18007819872 squared (18007819872²) is 324281576542398096384
• 18007819872 cubed (18007819872³) is 5839604218183685490598766542848
• The square root of 18007819872 is 134193.2184277581
• The cube root of 18007819872 is 2621.1208552309

Scales and comparisons

• 18,007,819,872 seconds is equal to 572 years, 30 weeks, 5 days, 20 hours, 11 minutes, 12 seconds.
• To count from 1 to 18,007,819,872 would take you about one thousand, one hundred forty-five 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 18007819872 cubic inches would be around 218.4 feet tall.

Recreational maths with 18007819872

• 18007819872 backwards is 27891870081
• The number of decimal digits it has is: 11
• The sum of 18007819872's digits is 51
• More coming soon!