18249716 has 12 divisors (see below), whose sum is σ = 32680032. Its totient is φ = 8912568.

The previous prime is 18249701. The next prime is 18249719. The reversal of 18249716 is 61794281.

It is a self number, because there is not a number n which added to its sum of digits gives 18249716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52880 + ... + 53223.

It is an arithmetic number, because the mean of its divisors is an integer number (2723336).

Almost surely, 2^18249716 is an apocalyptic number.

It is an amenable number.

18249716 is a deficient number, since it is larger than the sum of its proper divisors (14430316).

18249716 is a wasteful number, since it uses less digits than its factorization.

18249716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106150 (or 106148 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 18249716 is about 4271.9686328436. The cubic root of 18249716 is about 263.2805057019.

The spelling of 18249716 in words is "eighteen million, two hundred forty-nine thousand, seven hundred sixteen".