18549996 has 24 divisors (see below), whose sum is σ = 43382640. Its totient is φ = 6169152.

The previous prime is 18549959. The next prime is 18550033. The reversal of 18549996 is 69994581.

It is an interprime number because it is at equal distance from previous prime (18549959) and next prime (18550033).

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, 4590 + ... + 7626.

It is an arithmetic number, because the mean of its divisors is an integer number (1807610).

Almost surely, 2^18549996 is an apocalyptic number.

It is an amenable number.

18549996 is an abundant number, since it is smaller than the sum of its proper divisors (24832644).

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

18549996 is a wasteful number, since it uses less digits than its factorization.

18549996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553 (or 3551 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 18549996 is about 4306.9706291081. The cubic root of 18549996 is about 264.7166593027.

The spelling of 18549996 in words is "eighteen million, five hundred forty-nine thousand, nine hundred ninety-six".