18580056163 has 2 divisors, whose sum is σ = 18580056164. Its totient is φ = 18580056162.

The previous prime is 18580056161. The next prime is 18580056169. The reversal of 18580056163 is 36165008581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18580056163 - 2¹ = 18580056161 is a prime.

Together with 18580056161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18580056161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9290028081 + 9290028082.

It is an arithmetic number, because the mean of its divisors is an integer number (9290028082).

Almost surely, 2^18580056163 is an apocalyptic number.

18580056163 is a deficient number, since it is larger than the sum of its proper divisors (1).

18580056163 is an equidigital number, since it uses as much as digits as its factorization.

18580056163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 18580056163 in words is "eighteen billion, five hundred eighty million, fifty-six thousand, one hundred sixty-three".