18364012 has 12 divisors (see below), whose sum is σ = 34027560. Its totient is φ = 8641856.

The previous prime is 18364001. The next prime is 18364019. The reversal of 18364012 is 21046381.

It is a super-2 number, since 2×18364012² = 674473873472288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18364019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 134962 + ... + 135097.

It is an arithmetic number, because the mean of its divisors is an integer number (2835630).

Almost surely, 2^18364012 is an apocalyptic number.

It is an amenable number.

18364012 is a deficient number, since it is larger than the sum of its proper divisors (15663548).

18364012 is a wasteful number, since it uses less digits than its factorization.

18364012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270080 (or 270078 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18364012 is about 4285.3251918612. The cubic root of 18364012 is about 263.8289947041.

The spelling of 18364012 in words is "eighteen million, three hundred sixty-four thousand, twelve".