18474936 has 16 divisors (see below), whose sum is σ = 46187400. Its totient is φ = 6158304.

The previous prime is 18474931. The next prime is 18474991. The reversal of 18474936 is 63947481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18474931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384871 + ... + 384918.

Almost surely, 2^18474936 is an apocalyptic number.

It is an amenable number.

18474936 is an abundant number, since it is smaller than the sum of its proper divisors (27712464).

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

18474936 is a wasteful number, since it uses less digits than its factorization.

18474936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769798 (or 769794 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 18474936 is about 4298.2480151801. The cubic root of 18474936 is about 264.3591301553.

The spelling of 18474936 in words is "eighteen million, four hundred seventy-four thousand, nine hundred thirty-six".