18575959 has 2 divisors, whose sum is σ = 18575960. Its totient is φ = 18575958.

The previous prime is 18575941. The next prime is 18575971. The reversal of 18575959 is 95957581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18575959 - 2¹³ = 18567767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18575929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9287979 + 9287980.

It is an arithmetic number, because the mean of its divisors is an integer number (9287980).

Almost surely, 2^18575959 is an apocalyptic number.

18575959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18575959 is an equidigital number, since it uses as much as digits as its factorization.

18575959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 49.

The square root of 18575959 is about 4309.9836426604. The cubic root of 18575959 is about 264.8401028990.

The spelling of 18575959 in words is "eighteen million, five hundred seventy-five thousand, nine hundred fifty-nine".