18322923 has 16 divisors (see below), whose sum is σ = 25958016. Its totient is φ = 11456640.

The previous prime is 18322919. The next prime is 18322933. The reversal of 18322923 is 32922381.

It is a happy number.

It is not a de Polignac number, because 18322923 - 2² = 18322919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18322933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22188 + ... + 22998.

It is an arithmetic number, because the mean of its divisors is an integer number (1622376).

Almost surely, 2^18322923 is an apocalyptic number.

18322923 is a deficient number, since it is larger than the sum of its proper divisors (7635093).

18322923 is a wasteful number, since it uses less digits than its factorization.

18322923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274.

The product of its digits is 5184, while the sum is 30.

The square root of 18322923 is about 4280.5283552384. The cubic root of 18322923 is about 263.6320775904.

The spelling of 18322923 in words is "eighteen million, three hundred twenty-two thousand, nine hundred twenty-three".