18490959256 has 32 divisors (see below), whose sum is σ = 43225620480. Its totient is φ = 7204269600.

The previous prime is 18490959241. The next prime is 18490959281. The reversal of 18490959256 is 65295909481.

It is a super-3 number, since 3×18490959256³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18490959256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15008280 + ... + 15009511.

It is an arithmetic number, because the mean of its divisors is an integer number (1350800640).

Almost surely, 2^18490959256 is an apocalyptic number.

It is an amenable number.

18490959256 is an abundant number, since it is smaller than the sum of its proper divisors (24734661224).

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

18490959256 is a wasteful number, since it uses less digits than its factorization.

18490959256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30017815 (or 30017811 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 18490959256 in words is "eighteen billion, four hundred ninety million, nine hundred fifty-nine thousand, two hundred fifty-six".