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18042658902 = 233595663107
BaseRepresentation
bin10000110011011011…
…010010000001010110
31201120102110001001000
4100303123102001112
5243422410041102
612142204444130
71206054033042
oct206333220126
951512401030
1018042658902
117719679754
1235b6549646
131917018438
14c32373022
15708ed301c
hex4336d2056

18042658902 has 32 divisors (see below), whose sum is σ = 40774377600. Its totient is φ = 5912282664.

The previous prime is 18042658901. The next prime is 18042658919. The reversal of 18042658902 is 20985624081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18042658901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2828368 + ... + 2834739.

It is an arithmetic number, because the mean of its divisors is an integer number (1274199300).

Almost surely, 218042658902 is an apocalyptic number.

18042658902 is an abundant number, since it is smaller than the sum of its proper divisors (22731718698).

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

18042658902 is a wasteful number, since it uses less digits than its factorization.

18042658902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663177 (or 5663171 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 18042658902 in words is "eighteen billion, forty-two million, six hundred fifty-eight thousand, nine hundred two".

Divisors: 1 2 3 6 9 18 27 54 59 118 177 354 531 1062 1593 3186 5663107 11326214 16989321 33978642 50967963 101935926 152903889 305807778 334123313 668246626 1002369939 2004739878 3007109817 6014219634 9021329451 18042658902