18379459 has 6 divisors (see below), whose sum is σ = 21380244. Its totient is φ = 15753780.

The previous prime is 18379453. The next prime is 18379469. The reversal of 18379459 is 95497381.

It is a happy number.

It is not a de Polignac number, because 18379459 - 2²¹ = 16282307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18379453) 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 in 5 ways as a sum of consecutive naturals, for example, 187497 + ... + 187594.

It is an arithmetic number, because the mean of its divisors is an integer number (3563374).

Almost surely, 2^18379459 is an apocalyptic number.

18379459 is a deficient number, since it is larger than the sum of its proper divisors (3000785).

18379459 is an equidigital number, since it uses as much as digits as its factorization.

18379459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375105 (or 375098 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 18379459 is about 4287.1271266432. The cubic root of 18379459 is about 263.9029477586.

The spelling of 18379459 in words is "eighteen million, three hundred seventy-nine thousand, four hundred fifty-nine".