18266996 has 12 divisors (see below), whose sum is σ = 34873440. Its totient is φ = 8303160.

The previous prime is 18266981. The next prime is 18267001. The reversal of 18266996 is 69966281.

It is a self number, because there is not a number n which added to its sum of digits gives 18266996.

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, 207536 + ... + 207623.

It is an arithmetic number, because the mean of its divisors is an integer number (2906120).

Almost surely, 2^18266996 is an apocalyptic number.

It is an amenable number.

18266996 is a deficient number, since it is larger than the sum of its proper divisors (16606444).

18266996 is a wasteful number, since it uses less digits than its factorization.

18266996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415174 (or 415172 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 18266996 is about 4273.9906410754. The cubic root of 18266996 is about 263.3635764372.

The spelling of 18266996 in words is "eighteen million, two hundred sixty-six thousand, nine hundred ninety-six".