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18802573368 = 23310313954721
BaseRepresentation
bin10001100000101110…
…001000000000111000
31210112101100200201020
4101200232020000320
5302001424321433
612345432222440
71233642144105
oct214056100070
953471320636
1018802573368
117a79620737
123788b3aa20
131a085a4877
14ca5265aac
15750a8ccb3
hex460b88038

18802573368 has 64 divisors (see below), whose sum is σ = 47805139200. Its totient is φ = 6161909760.

The previous prime is 18802573343. The next prime is 18802573369. The reversal of 18802573368 is 86337520881.

It is a self number, because there is not a number n which added to its sum of digits gives 18802573368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18802573369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316248 + ... + 370968.

It is an arithmetic number, because the mean of its divisors is an integer number (746955300).

Almost surely, 218802573368 is an apocalyptic number.

It is an amenable number.

18802573368 is an abundant number, since it is smaller than the sum of its proper divisors (29002565832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18802573368 is a wasteful number, since it uses less digits than its factorization.

18802573368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54972 (or 54968 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 18802573368 in words is "eighteen billion, eight hundred two million, five hundred seventy-three thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 103 139 206 278 309 412 417 556 618 824 834 1112 1236 1668 2472 3336 14317 28634 42951 54721 57268 85902 109442 114536 164163 171804 218884 328326 343608 437768 656652 1313304 5636263 7606219 11272526 15212438 16908789 22545052 22818657 30424876 33817578 45090104 45637314 60849752 67635156 91274628 135270312 182549256 783440557 1566881114 2350321671 3133762228 4700643342 6267524456 9401286684 18802573368