167891 has 2 divisors, whose sum is σ = 167892. Its totient is φ = 167890.

The previous prime is 167887. The next prime is 167899. The reversal of 167891 is 198761.

It is a weak prime.

It is an emirp because it is prime and its reverse (198761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167891 - 2² = 167887 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83945 + 83946.

It is an arithmetic number, because the mean of its divisors is an integer number (83946).

2¹⁶⁷⁸⁹¹ is an apocalyptic number.

167891 is a deficient number, since it is larger than the sum of its proper divisors (1).

167891 is an equidigital number, since it uses as much as digits as its factorization.

167891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 167891 is about 409.7450426790. The cubic root of 167891 is about 55.1665475040.

The spelling of 167891 in words is "one hundred sixty-seven thousand, eight hundred ninety-one".