18399676 has 12 divisors (see below), whose sum is σ = 33894280. Its totient is φ = 8715600.

The previous prime is 18399673. The next prime is 18399691. The reversal of 18399676 is 67699381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18399673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120975 + ... + 121126.

Almost surely, 2^18399676 is an apocalyptic number.

It is an amenable number.

18399676 is a deficient number, since it is larger than the sum of its proper divisors (15494604).

18399676 is a wasteful number, since it uses less digits than its factorization.

18399676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242124 (or 242122 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 18399676 is about 4289.4843512945. The cubic root of 18399676 is about 263.9996747777. Note that the first 3 decimals are identical.

The spelling of 18399676 in words is "eighteen million, three hundred ninety-nine thousand, six hundred seventy-six".