18344812 has 6 divisors (see below), whose sum is σ = 32103428. Its totient is φ = 9172404.

The previous prime is 18344773. The next prime is 18344813. The reversal of 18344812 is 21844381.

It is not an unprimeable number, because it can be changed into a prime (18344813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2293098 + ... + 2293105.

Almost surely, 2^18344812 is an apocalyptic number.

It is an amenable number.

18344812 is a deficient number, since it is larger than the sum of its proper divisors (13758616).

18344812 is a wasteful number, since it uses less digits than its factorization.

18344812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586207 (or 4586205 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 18344812 is about 4283.0844026239. The cubic root of 18344812 is about 263.7370161993.

The spelling of 18344812 in words is "eighteen million, three hundred forty-four thousand, eight hundred twelve".