168949171 has 2 divisors, whose sum is σ = 168949172. Its totient is φ = 168949170.

The previous prime is 168949147. The next prime is 168949211. The reversal of 168949171 is 171949861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168949171 - 2⁵ = 168949139 is a prime.

It is not a weakly prime, because it can be changed into another prime (168149171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84474585 + 84474586.

It is an arithmetic number, because the mean of its divisors is an integer number (84474586).

Almost surely, 2^168949171 is an apocalyptic number.

168949171 is a deficient number, since it is larger than the sum of its proper divisors (1).

168949171 is an equidigital number, since it uses as much as digits as its factorization.

168949171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The square root of 168949171 is about 12998.0448914443. The cubic root of 168949171 is about 552.8220473889.

The spelling of 168949171 in words is "one hundred sixty-eight million, nine hundred forty-nine thousand, one hundred seventy-one".