18164974 has 8 divisors (see below), whose sum is σ = 27329328. Its totient is φ = 9055200.

The previous prime is 18164957. The next prime is 18164981. The reversal of 18164974 is 47946181.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 12802 + ... + 14149.

It is an arithmetic number, because the mean of its divisors is an integer number (3416166).

Almost surely, 2^18164974 is an apocalyptic number.

18164974 is a deficient number, since it is larger than the sum of its proper divisors (9164354).

18164974 is a wasteful number, since it uses less digits than its factorization.

18164974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27290.

The product of its digits is 48384, while the sum is 40.

The square root of 18164974 is about 4262.0387140428. The cubic root of 18164974 is about 262.8723616459.

The spelling of 18164974 in words is "eighteen million, one hundred sixty-four thousand, nine hundred seventy-four".