18630868 has 24 divisors (see below), whose sum is σ = 35124320. Its totient is φ = 8618400.

The previous prime is 18630863. The next prime is 18630877. The reversal of 18630868 is 86803681.

It is a self number, because there is not a number n which added to its sum of digits gives 18630868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18630863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418 + ... + 6118.

Almost surely, 2^18630868 is an apocalyptic number.

It is an amenable number.

18630868 is a deficient number, since it is larger than the sum of its proper divisors (16493452).

18630868 is a wasteful number, since it uses less digits than its factorization.

18630868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767 (or 5765 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 18630868 is about 4316.3489200944. The cubic root of 18630868 is about 265.1007946938.

The spelling of 18630868 in words is "eighteen million, six hundred thirty thousand, eight hundred sixty-eight".