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18013751882 = 2729411278521
BaseRepresentation
bin10000110001101101…
…000000101001001010
31201111102001102001122
4100301231000221022
5243343010030012
612135253115242
71205253236030
oct206155005112
951442042048
1018013751882
117704325455
1235a8928b22
131911036aa9
14c2c5aa550
157066c2e72
hex431b40a4a

18013751882 has 64 divisors (see below), whose sum is σ = 32986275840. Its totient is φ = 7214054400.

The previous prime is 18013751881. The next prime is 18013751981. The reversal of 18013751882 is 28815731081.

It is not an unprimeable number, because it can be changed into a prime (18013751881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2109782 + ... + 2118302.

It is an arithmetic number, because the mean of its divisors is an integer number (515410560).

Almost surely, 218013751882 is an apocalyptic number.

18013751882 is a deficient number, since it is larger than the sum of its proper divisors (14972523958).

18013751882 is a wasteful number, since it uses less digits than its factorization.

18013751882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8727.

The product of its (nonzero) digits is 107520, while the sum is 44.

The spelling of 18013751882 in words is "eighteen billion, thirteen million, seven hundred fifty-one thousand, eight hundred eighty-two".

Divisors: 1 2 7 14 29 41 58 82 127 203 254 287 406 574 889 1189 1778 2378 3683 5207 7366 8323 8521 10414 16646 17042 25781 36449 51562 59647 72898 119294 151003 247109 302006 349361 494218 698722 1057021 1082167 1729763 2114042 2164334 2445527 3459526 4891054 7575169 10131469 15150338 20262938 31382843 44368847 62765686 70920283 88737694 141840566 219679901 310581929 439359802 621163858 1286696563 2573393126 9006875941 18013751882