18170459 has 2 divisors, whose sum is σ = 18170460. Its totient is φ = 18170458.

The previous prime is 18170431. The next prime is 18170461. The reversal of 18170459 is 95407181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18170459 - 2¹⁶ = 18104923 is a prime.

Together with 18170461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18170429) 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, 9085229 + 9085230.

It is an arithmetic number, because the mean of its divisors is an integer number (9085230).

Almost surely, 2^18170459 is an apocalyptic number.

18170459 is a deficient number, since it is larger than the sum of its proper divisors (1).

18170459 is an equidigital number, since it uses as much as digits as its factorization.

18170459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 18170459 is about 4262.6821368711. The cubic root of 18170459 is about 262.8988175017.

The spelling of 18170459 in words is "eighteen million, one hundred seventy thousand, four hundred fifty-nine".