18040364 has 6 divisors (see below), whose sum is σ = 31570644. Its totient is φ = 9020180.

The previous prime is 18040333. The next prime is 18040387. The reversal of 18040364 is 46304081.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2255042 + ... + 2255049.

It is an arithmetic number, because the mean of its divisors is an integer number (5261774).

Almost surely, 2^18040364 is an apocalyptic number.

It is an amenable number.

18040364 is a deficient number, since it is larger than the sum of its proper divisors (13530280).

18040364 is a wasteful number, since it uses less digits than its factorization.

18040364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510095 (or 4510093 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 18040364 is about 4247.3949663294. The cubic root of 18040364 is about 262.2698887407.

The spelling of 18040364 in words is "eighteen million, forty thousand, three hundred sixty-four".