18382369 has 2 divisors, whose sum is σ = 18382370. Its totient is φ = 18382368.

The previous prime is 18382337. The next prime is 18382379. The reversal of 18382369 is 96328381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14922769 + 3459600 = 3863^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 18382369 - 2⁵ = 18382337 is a prime.

It is a super-2 number, since 2×18382369² = 675822980104322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18382319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191184 + 9191185.

It is an arithmetic number, because the mean of its divisors is an integer number (9191185).

Almost surely, 2^18382369 is an apocalyptic number.

It is an amenable number.

18382369 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382369 is an equidigital number, since it uses as much as digits as its factorization.

18382369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 18382369 is about 4287.4665013269. The cubic root of 18382369 is about 263.9168748470.

The spelling of 18382369 in words is "eighteen million, three hundred eighty-two thousand, three hundred sixty-nine".