18324373 has 2 divisors, whose sum is σ = 18324374. Its totient is φ = 18324372.

The previous prime is 18324347. The next prime is 18324377. The reversal of 18324373 is 37342381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12974404 + 5349969 = 3602^2 + 2313^2 .

It is a cyclic number.

It is not a de Polignac number, because 18324373 - 2⁹ = 18323861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18324377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9162186 + 9162187.

It is an arithmetic number, because the mean of its divisors is an integer number (9162187).

Almost surely, 2^18324373 is an apocalyptic number.

It is an amenable number.

18324373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18324373 is an equidigital number, since it uses as much as digits as its factorization.

18324373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 18324373 is about 4280.6977235026. The cubic root of 18324373 is about 263.6390316561.

The spelling of 18324373 in words is "eighteen million, three hundred twenty-four thousand, three hundred seventy-three".