18336249 has 12 divisors (see below), whose sum is σ = 26574912. Its totient is φ = 12183000.

The previous prime is 18336209. The next prime is 18336257. The reversal of 18336249 is 94263381.

It is not a de Polignac number, because 18336249 - 2¹¹ = 18334201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18336209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477 + ... + 6074.

It is an arithmetic number, because the mean of its divisors is an integer number (2214576).

Almost surely, 2^18336249 is an apocalyptic number.

It is an amenable number.

18336249 is a deficient number, since it is larger than the sum of its proper divisors (8238663).

18336249 is a wasteful number, since it uses less digits than its factorization.

18336249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868 (or 6865 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 18336249 is about 4282.0846558656. The cubic root of 18336249 is about 263.6959740498.

The spelling of 18336249 in words is "eighteen million, three hundred thirty-six thousand, two hundred forty-nine".