18468859 has 2 divisors, whose sum is σ = 18468860. Its totient is φ = 18468858.

The previous prime is 18468847. The next prime is 18468871. The reversal of 18468859 is 95886481.

It is a balanced prime because it is at equal distance from previous prime (18468847) and next prime (18468871).

It is an emirp because it is prime and its reverse (95886481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18468859 - 2⁹ = 18468347 is a prime.

It is not a weakly prime, because it can be changed into another prime (18468899) 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, 9234429 + 9234430.

It is an arithmetic number, because the mean of its divisors is an integer number (9234430).

Almost surely, 2^18468859 is an apocalyptic number.

18468859 is a deficient number, since it is larger than the sum of its proper divisors (1).

18468859 is an equidigital number, since it uses as much as digits as its factorization.

18468859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 49.

The square root of 18468859 is about 4297.5410411071. The cubic root of 18468859 is about 264.3301415729.

The spelling of 18468859 in words is "eighteen million, four hundred sixty-eight thousand, eight hundred fifty-nine".