18768339 has 12 divisors (see below), whose sum is σ = 27740856. Its totient is φ = 12220992.

The previous prime is 18768331. The next prime is 18768341. The reversal of 18768339 is 93386781.

It is a happy number.

It is not a de Polignac number, because 18768339 - 2³ = 18768331 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18768294 and 18768303.

It is not an unprimeable number, because it can be changed into a prime (18768331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23862 + ... + 24635.

It is an arithmetic number, because the mean of its divisors is an integer number (2311738).

Almost surely, 2^18768339 is an apocalyptic number.

18768339 is a deficient number, since it is larger than the sum of its proper divisors (8972517).

18768339 is a wasteful number, since it uses less digits than its factorization.

18768339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48546 (or 48543 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 18768339 is about 4332.2441066957. The cubic root of 18768339 is about 265.7512278304.

The spelling of 18768339 in words is "eighteen million, seven hundred sixty-eight thousand, three hundred thirty-nine".