18089164 has 12 divisors (see below), whose sum is σ = 32193000. Its totient is φ = 8891168.

The previous prime is 18089147. The next prime is 18089171. The reversal of 18089164 is 46198081.

It is a happy 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, 38089 + ... + 38560.

It is an arithmetic number, because the mean of its divisors is an integer number (2682750).

Almost surely, 2^18089164 is an apocalyptic number.

It is an amenable number.

18089164 is a deficient number, since it is larger than the sum of its proper divisors (14103836).

18089164 is a wasteful number, since it uses less digits than its factorization.

18089164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76712 (or 76710 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18089164 is about 4253.1357843361. The cubic root of 18089164 is about 262.5061597950.

The spelling of 18089164 in words is "eighteen million, eighty-nine thousand, one hundred sixty-four".