18932432227 has 2 divisors, whose sum is σ = 18932432228. Its totient is φ = 18932432226.

The previous prime is 18932432159. The next prime is 18932432269. The reversal of 18932432227 is 72223423981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18932432227 - 2¹⁵ = 18932399459 is a prime.

It is not a weakly prime, because it can be changed into another prime (18932432327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9466216113 + 9466216114.

It is an arithmetic number, because the mean of its divisors is an integer number (9466216114).

Almost surely, 2^18932432227 is an apocalyptic number.

18932432227 is a deficient number, since it is larger than the sum of its proper divisors (1).

18932432227 is an equidigital number, since it uses as much as digits as its factorization.

18932432227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The spelling of 18932432227 in words is "eighteen billion, nine hundred thirty-two million, four hundred thirty-two thousand, two hundred twenty-seven".