18867332027 has 2 divisors, whose sum is σ = 18867332028. Its totient is φ = 18867332026.

The previous prime is 18867331991. The next prime is 18867332093. The reversal of 18867332027 is 72023376881.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18867332027 is a prime.

It is not a weakly prime, because it can be changed into another prime (18867332327) 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, 9433666013 + 9433666014.

It is an arithmetic number, because the mean of its divisors is an integer number (9433666014).

Almost surely, 2^18867332027 is an apocalyptic number.

18867332027 is a deficient number, since it is larger than the sum of its proper divisors (1).

18867332027 is an equidigital number, since it uses as much as digits as its factorization.

18867332027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 18867332027 in words is "eighteen billion, eight hundred sixty-seven million, three hundred thirty-two thousand, twenty-seven".