18608089 has 2 divisors, whose sum is σ = 18608090. Its totient is φ = 18608088.

The previous prime is 18608027. The next prime is 18608113. The reversal of 18608089 is 98080681.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16064064 + 2544025 = 4008^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 18608089 - 2⁷ = 18607961 is a prime.

It is not a weakly prime, because it can be changed into another prime (18600089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9304044 + 9304045.

It is an arithmetic number, because the mean of its divisors is an integer number (9304045).

Almost surely, 2^18608089 is an apocalyptic number.

It is an amenable number.

18608089 is a deficient number, since it is larger than the sum of its proper divisors (1).

18608089 is an equidigital number, since it uses as much as digits as its factorization.

18608089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 18608089 is about 4313.7094246136. The cubic root of 18608089 is about 264.9927089486.

The spelling of 18608089 in words is "eighteen million, six hundred eight thousand, eighty-nine".