18281056264 has 32 divisors (see below), whose sum is σ = 36097084800. Its totient is φ = 8655595200.

The previous prime is 18281056243. The next prime is 18281056271. The reversal of 18281056264 is 46265018281.

It is a self number, because there is not a number n which added to its sum of digits gives 18281056264.

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, 331774 + ... + 382930.

It is an arithmetic number, because the mean of its divisors is an integer number (1128033900).

Almost surely, 2^18281056264 is an apocalyptic number.

It is an amenable number.

18281056264 is a deficient number, since it is larger than the sum of its proper divisors (17816028536).

18281056264 is a wasteful number, since it uses less digits than its factorization.

18281056264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53533 (or 53529 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 18281056264 in words is "eighteen billion, two hundred eighty-one million, fifty-six thousand, two hundred sixty-four".