18967608871 has 2 divisors, whose sum is σ = 18967608872. Its totient is φ = 18967608870.

The previous prime is 18967608809. The next prime is 18967608941. The reversal of 18967608871 is 17880676981.

It is a weak prime.

It is an emirp because it is prime and its reverse (17880676981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18967608871 - 2¹³ = 18967600679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18967608071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9483804435 + 9483804436.

It is an arithmetic number, because the mean of its divisors is an integer number (9483804436).

Almost surely, 2^18967608871 is an apocalyptic number.

18967608871 is a deficient number, since it is larger than the sum of its proper divisors (1).

18967608871 is an equidigital number, since it uses as much as digits as its factorization.

18967608871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 61.

The spelling of 18967608871 in words is "eighteen billion, nine hundred sixty-seven million, six hundred eight thousand, eight hundred seventy-one".