18164208 has 40 divisors (see below), whose sum is σ = 48546000. Its totient is φ = 5845504.

The previous prime is 18164173. The next prime is 18164221. The reversal of 18164208 is 80246181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133 + ... + 7916.

It is an arithmetic number, because the mean of its divisors is an integer number (1213650).

Almost surely, 2^18164208 is an apocalyptic number.

It is an amenable number.

18164208 is an abundant number, since it is smaller than the sum of its proper divisors (30381792).

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

18164208 is a wasteful number, since it uses less digits than its factorization.

18164208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13089 (or 13083 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 18164208 is about 4261.9488499981. The cubic root of 18164208 is about 262.8686665665.

The spelling of 18164208 in words is "eighteen million, one hundred sixty-four thousand, two hundred eight".