18004579 has 2 divisors, whose sum is σ = 18004580. Its totient is φ = 18004578.

The previous prime is 18004541. The next prime is 18004601. The reversal of 18004579 is 97540081.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97540081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18004579 - 2⁹ = 18004067 is a prime.

It is not a weakly prime, because it can be changed into another prime (18004529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9002289 + 9002290.

It is an arithmetic number, because the mean of its divisors is an integer number (9002290).

Almost surely, 2^18004579 is an apocalyptic number.

18004579 is a deficient number, since it is larger than the sum of its proper divisors (1).

18004579 is an equidigital number, since it uses as much as digits as its factorization.

18004579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18004579 is about 4243.1802931292. The cubic root of 18004579 is about 262.0963604531.

The spelling of 18004579 in words is "eighteen million, four thousand, five hundred seventy-nine".