18385104 has 20 divisors (see below), whose sum is σ = 47494976. Its totient is φ = 6128352.

The previous prime is 18385099. The next prime is 18385121. The reversal of 18385104 is 40158381.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191464 + ... + 191559.

Almost surely, 2^18385104 is an apocalyptic number.

It is an amenable number.

18385104 is an abundant number, since it is smaller than the sum of its proper divisors (29109872).

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

18385104 is a wasteful number, since it uses less digits than its factorization.

18385104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383034 (or 383028 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18385104 is about 4287.7854423933. The cubic root of 18385104 is about 263.9299630560.

The spelling of 18385104 in words is "eighteen million, three hundred eighty-five thousand, one hundred four".