168401867 has 2 divisors, whose sum is σ = 168401868. Its totient is φ = 168401866.

The previous prime is 168401773. The next prime is 168401879. The reversal of 168401867 is 768104861.

168401867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (768104861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168401867 - 2¹² = 168397771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168400867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84200933 + 84200934.

It is an arithmetic number, because the mean of its divisors is an integer number (84200934).

Almost surely, 2^168401867 is an apocalyptic number.

168401867 is a deficient number, since it is larger than the sum of its proper divisors (1).

168401867 is an equidigital number, since it uses as much as digits as its factorization.

168401867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 168401867 is about 12976.9744933093. The cubic root of 168401867 is about 552.2244534155.

The spelling of 168401867 in words is "one hundred sixty-eight million, four hundred one thousand, eight hundred sixty-seven".