18197164 has 6 divisors (see below), whose sum is σ = 31845044. Its totient is φ = 9098580.

The previous prime is 18197149. The next prime is 18197173. The reversal of 18197164 is 46179181.

It is a super-2 number, since 2×18197164² = 662273555285792, which contains 22 as substring.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2274642 + ... + 2274649.

Almost surely, 2^18197164 is an apocalyptic number.

It is an amenable number.

18197164 is a deficient number, since it is larger than the sum of its proper divisors (13647880).

18197164 is a wasteful number, since it uses less digits than its factorization.

18197164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549295 (or 4549293 counting only the distinct ones).

The product of its digits is 12096, while the sum is 37.

The square root of 18197164 is about 4265.8134042642. The cubic root of 18197164 is about 263.0275479922.

The spelling of 18197164 in words is "eighteen million, one hundred ninety-seven thousand, one hundred sixty-four".