18385074 has 24 divisors (see below), whose sum is σ = 39992940. Its totient is φ = 6103968.

The previous prime is 18385069. The next prime is 18385091. The reversal of 18385074 is 47058381.

It can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 5832225 = 3543^2 + 2415^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2944 + ... + 6740.

Almost surely, 2^18385074 is an apocalyptic number.

18385074 is an abundant number, since it is smaller than the sum of its proper divisors (21607866).

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

18385074 is a wasteful number, since it uses less digits than its factorization.

18385074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074 (or 4071 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 18385074 is about 4287.7819440825. The cubic root of 18385074 is about 263.9298194995.

The spelling of 18385074 in words is "eighteen million, three hundred eighty-five thousand, seventy-four".