18304195859 has 2 divisors, whose sum is σ = 18304195860. Its totient is φ = 18304195858.

The previous prime is 18304195837. The next prime is 18304195891. The reversal of 18304195859 is 95859140381.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (95859140381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18304195859 - 2⁸ = 18304195603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18304195859.

It is not a weakly prime, because it can be changed into another prime (18304195159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9152097929 + 9152097930.

It is an arithmetic number, because the mean of its divisors is an integer number (9152097930).

Almost surely, 2^18304195859 is an apocalyptic number.

18304195859 is a deficient number, since it is larger than the sum of its proper divisors (1).

18304195859 is an equidigital number, since it uses as much as digits as its factorization.

18304195859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 18304195859 in words is "eighteen billion, three hundred four million, one hundred ninety-five thousand, eight hundred fifty-nine".