18164308 has 12 divisors (see below), whose sum is σ = 31972500. Its totient is φ = 9029312.

The previous prime is 18164281. The next prime is 18164339. The reversal of 18164308 is 80346181.

It can be written as a sum of positive squares in 2 ways, for example, as 15382084 + 2782224 = 3922^2 + 1668^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18164308.

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, 12433 + ... + 13816.

It is an arithmetic number, because the mean of its divisors is an integer number (2664375).

Almost surely, 2^18164308 is an apocalyptic number.

It is an amenable number.

18164308 is a deficient number, since it is larger than the sum of its proper divisors (13808192).

18164308 is a wasteful number, since it uses less digits than its factorization.

18164308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26426 (or 26424 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18164308 is about 4261.9605817042. The cubic root of 18164308 is about 262.8691489588.

The spelling of 18164308 in words is "eighteen million, one hundred sixty-four thousand, three hundred eight".