18323836 has 6 divisors (see below), whose sum is σ = 32066720. Its totient is φ = 9161916.

The previous prime is 18323797. The next prime is 18323861. The reversal of 18323836 is 63832381.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2290476 + ... + 2290483.

Almost surely, 2^18323836 is an apocalyptic number.

It is an amenable number.

18323836 is a deficient number, since it is larger than the sum of its proper divisors (13742884).

18323836 is a wasteful number, since it uses less digits than its factorization.

18323836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580963 (or 4580961 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 18323836 is about 4280.6349996233. The cubic root of 18323836 is about 263.6364562966.

The spelling of 18323836 in words is "eighteen million, three hundred twenty-three thousand, eight hundred thirty-six".