18073564 has 6 divisors (see below), whose sum is σ = 31628744. Its totient is φ = 9036780.

The previous prime is 18073553. The next prime is 18073591. The reversal of 18073564 is 46537081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2259192 + ... + 2259199.

Almost surely, 2^18073564 is an apocalyptic number.

It is an amenable number.

18073564 is a deficient number, since it is larger than the sum of its proper divisors (13555180).

18073564 is a wasteful number, since it uses less digits than its factorization.

18073564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518395 (or 4518393 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 18073564 is about 4251.3014477922. The cubic root of 18073564 is about 262.4306767811.

The spelling of 18073564 in words is "eighteen million, seventy-three thousand, five hundred sixty-four".