18879843167 has 2 divisors, whose sum is σ = 18879843168. Its totient is φ = 18879843166.

The previous prime is 18879843133. The next prime is 18879843173. The reversal of 18879843167 is 76134897881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18879843167 - 2⁸ = 18879842911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18879843067) 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, 9439921583 + 9439921584.

It is an arithmetic number, because the mean of its divisors is an integer number (9439921584).

Almost surely, 2^18879843167 is an apocalyptic number.

18879843167 is a deficient number, since it is larger than the sum of its proper divisors (1).

18879843167 is an equidigital number, since it uses as much as digits as its factorization.

18879843167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 62.

The spelling of 18879843167 in words is "eighteen billion, eight hundred seventy-nine million, eight hundred forty-three thousand, one hundred sixty-seven".