18464674 has 4 divisors (see below), whose sum is σ = 27697014. Its totient is φ = 9232336.

The previous prime is 18464659. The next prime is 18464701. The reversal of 18464674 is 47646481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 1940449 = 4065^2 + 1393^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4616167 + ... + 4616170.

Almost surely, 2^18464674 is an apocalyptic number.

18464674 is a deficient number, since it is larger than the sum of its proper divisors (9232340).

18464674 is an equidigital number, since it uses as much as digits as its factorization.

18464674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232339.

The product of its digits is 129024, while the sum is 40.

The square root of 18464674 is about 4297.0541071762. The cubic root of 18464674 is about 264.3101745353.

The spelling of 18464674 in words is "eighteen million, four hundred sixty-four thousand, six hundred seventy-four".