18675659 has 2 divisors, whose sum is σ = 18675660. Its totient is φ = 18675658.

The previous prime is 18675641. The next prime is 18675677. The reversal of 18675659 is 95657681.

It is a balanced prime because it is at equal distance from previous prime (18675641) and next prime (18675677).

It is a cyclic number.

It is not a de Polignac number, because 18675659 - 2²⁰ = 17627083 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18675359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9337829 + 9337830.

It is an arithmetic number, because the mean of its divisors is an integer number (9337830).

Almost surely, 2^18675659 is an apocalyptic number.

18675659 is a deficient number, since it is larger than the sum of its proper divisors (1).

18675659 is an equidigital number, since it uses as much as digits as its factorization.

18675659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 47.

The square root of 18675659 is about 4321.5343340068. The cubic root of 18675659 is about 265.3130701272.

The spelling of 18675659 in words is "eighteen million, six hundred seventy-five thousand, six hundred fifty-nine".