18325369 has 2 divisors, whose sum is σ = 18325370. Its totient is φ = 18325368.

The previous prime is 18325327. The next prime is 18325379. The reversal of 18325369 is 96352381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 4782969 = 3680^2 + 2187^2 .

It is a cyclic number.

It is not a de Polignac number, because 18325369 - 2¹¹ = 18323321 is a prime.

It is a super-2 number, since 2×18325369² = 671638297972322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18325379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9162684 + 9162685.

It is an arithmetic number, because the mean of its divisors is an integer number (9162685).

Almost surely, 2^18325369 is an apocalyptic number.

It is an amenable number.

18325369 is a deficient number, since it is larger than the sum of its proper divisors (1).

18325369 is an equidigital number, since it uses as much as digits as its factorization.

18325369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 18325369 is about 4280.8140580969. The cubic root of 18325369 is about 263.6438081673.

It can be divided in two parts, 183 and 25369, that added together give a palindrome (25552).

The spelling of 18325369 in words is "eighteen million, three hundred twenty-five thousand, three hundred sixty-nine".