18198968 has 16 divisors (see below), whose sum is σ = 35045880. Its totient is φ = 8853408.

The previous prime is 18198937. The next prime is 18198977. The reversal of 18198968 is 86989181.

It is a happy number.

It is a congruent 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, 30446 + ... + 31037.

Almost surely, 2^18198968 is an apocalyptic number.

It is an amenable number.

18198968 is a deficient number, since it is larger than the sum of its proper divisors (16846912).

18198968 is a wasteful number, since it uses less digits than its factorization.

18198968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61526 (or 61522 counting only the distinct ones).

The product of its digits is 248832, while the sum is 50.

The square root of 18198968 is about 4266.0248475601. The cubic root of 18198968 is about 263.0362395666.

The spelling of 18198968 in words is "eighteen million, one hundred ninety-eight thousand, nine hundred sixty-eight".