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18029957458 = 236432474603
BaseRepresentation
bin10000110010101010…
…110101000101010010
31201112112112201221011
4100302222311011102
5243411132114313
612141032321134
71205541052432
oct206252650522
951475481834
1018029957458
117712493997
1235b22431aa
1319144bc0a6
14c307c82c2
15707d2493d
hex432ab5152

18029957458 has 8 divisors (see below), whose sum is σ = 27052370928. Its totient is φ = 9012500484.

The previous prime is 18029957447. The next prime is 18029957467. The reversal of 18029957458 is 85475992081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230016 + ... + 1244587.

It is an arithmetic number, because the mean of its divisors is an integer number (3381546366).

Almost surely, 218029957458 is an apocalyptic number.

18029957458 is a deficient number, since it is larger than the sum of its proper divisors (9022413470).

18029957458 is a wasteful number, since it uses less digits than its factorization.

18029957458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478248.

The product of its (nonzero) digits is 7257600, while the sum is 58.

The spelling of 18029957458 in words is "eighteen billion, twenty-nine million, nine hundred fifty-seven thousand, four hundred fifty-eight".

Divisors: 1 2 3643 7286 2474603 4949206 9014978729 18029957458