18295225889 has 2 divisors, whose sum is σ = 18295225890. Its totient is φ = 18295225888.

The previous prime is 18295225849. The next prime is 18295225931. The reversal of 18295225889 is 98852259281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15552085264 + 2743140625 = 124708^2 + 52375^2 .

It is an emirp because it is prime and its reverse (98852259281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18295225889 - 2²⁸ = 18026790433 is a prime.

It is not a weakly prime, because it can be changed into another prime (18295225829) 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, 9147612944 + 9147612945.

It is an arithmetic number, because the mean of its divisors is an integer number (9147612945).

Almost surely, 2^18295225889 is an apocalyptic number.

It is an amenable number.

18295225889 is a deficient number, since it is larger than the sum of its proper divisors (1).

18295225889 is an equidigital number, since it uses as much as digits as its factorization.

18295225889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8294400, while the sum is 59.

The spelling of 18295225889 in words is "eighteen billion, two hundred ninety-five million, two hundred twenty-five thousand, eight hundred eighty-nine".