18008579 has 2 divisors, whose sum is σ = 18008580. Its totient is φ = 18008578.

The previous prime is 18008539. The next prime is 18008597. The reversal of 18008579 is 97580081.

Together with next prime (18008597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18008579 - 2¹⁶ = 17943043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18008519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004289 + 9004290.

It is an arithmetic number, because the mean of its divisors is an integer number (9004290).

Almost surely, 2^18008579 is an apocalyptic number.

18008579 is a deficient number, since it is larger than the sum of its proper divisors (1).

18008579 is an equidigital number, since it uses as much as digits as its factorization.

18008579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 18008579 is about 4243.6516115251. The cubic root of 18008579 is about 262.1157686235.

The spelling of 18008579 in words is "eighteen million, eight thousand, five hundred seventy-nine".