18645953059 has 2 divisors, whose sum is σ = 18645953060. Its totient is φ = 18645953058.

The previous prime is 18645953023. The next prime is 18645953093. The reversal of 18645953059 is 95035954681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18645953059 - 2¹¹ = 18645951011 is a prime.

It is not a weakly prime, because it can be changed into another prime (18645953009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9322976529 + 9322976530.

It is an arithmetic number, because the mean of its divisors is an integer number (9322976530).

Almost surely, 2^18645953059 is an apocalyptic number.

18645953059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18645953059 is an equidigital number, since it uses as much as digits as its factorization.

18645953059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832000, while the sum is 55.

The spelling of 18645953059 in words is "eighteen billion, six hundred forty-five million, nine hundred fifty-three thousand, fifty-nine".