18249356 has 12 divisors (see below), whose sum is σ = 31995768. Its totient is φ = 9107712.

The previous prime is 18249353. The next prime is 18249377. The reversal of 18249356 is 65394281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18249353) 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, 1646 + ... + 6261.

It is an arithmetic number, because the mean of its divisors is an integer number (2666314).

Almost surely, 2^18249356 is an apocalyptic number.

It is an amenable number.

18249356 is a deficient number, since it is larger than the sum of its proper divisors (13746412).

18249356 is a wasteful number, since it uses less digits than its factorization.

18249356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488 (or 8486 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 18249356 is about 4271.9264974950. The cubic root of 18249356 is about 263.2787745041.

The spelling of 18249356 in words is "eighteen million, two hundred forty-nine thousand, three hundred fifty-six".