18214974 has 12 divisors (see below), whose sum is σ = 39465816. Its totient is φ = 6071652.

The previous prime is 18214969. The next prime is 18214981. The reversal of 18214974 is 47941281.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 505954 + ... + 505989.

It is an arithmetic number, because the mean of its divisors is an integer number (3288818).

Almost surely, 2^18214974 is an apocalyptic number.

18214974 is an abundant number, since it is smaller than the sum of its proper divisors (21250842).

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

18214974 is a wasteful number, since it uses less digits than its factorization.

18214974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011951 (or 1011948 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 18214974 is about 4267.9004205815. The cubic root of 18214974 is about 263.1133304650.

The spelling of 18214974 in words is "eighteen million, two hundred fourteen thousand, nine hundred seventy-four".