18394323 has 16 divisors (see below), whose sum is σ = 26866080. Its totient is φ = 11142656.

The previous prime is 18394309. The next prime is 18394331. The reversal of 18394323 is 32349381.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18394323 - 2⁴ = 18394307 is a prime.

It is a super-2 number, since 2×18394323² = 676702237256658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18394303) 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, 4740 + ... + 7697.

It is an arithmetic number, because the mean of its divisors is an integer number (1679130).

Almost surely, 2^18394323 is an apocalyptic number.

18394323 is a deficient number, since it is larger than the sum of its proper divisors (8471757).

18394323 is a wasteful number, since it uses less digits than its factorization.

18394323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12486.

The product of its digits is 15552, while the sum is 33.

The square root of 18394323 is about 4288.8603381318. The cubic root of 18394323 is about 263.9740705709.

The spelling of 18394323 in words is "eighteen million, three hundred ninety-four thousand, three hundred twenty-three".