18049656 has 32 divisors (see below), whose sum is σ = 45867600. Its totient is φ = 5917440.

The previous prime is 18049607. The next prime is 18049697. The reversal of 18049656 is 65694081.

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, 4701 + ... + 7628.

Almost surely, 2^18049656 is an apocalyptic number.

It is an amenable number.

18049656 is an abundant number, since it is smaller than the sum of its proper divisors (27817944).

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

18049656 is a wasteful number, since it uses less digits than its factorization.

18049656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12399 (or 12395 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 18049656 is about 4248.4886724575. The cubic root of 18049656 is about 262.3149098855.

The spelling of 18049656 in words is "eighteen million, forty-nine thousand, six hundred fifty-six".