171968113 has 2 divisors, whose sum is σ = 171968114. Its totient is φ = 171968112.

The previous prime is 171968087. The next prime is 171968143. The reversal of 171968113 is 311869171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151609969 + 20358144 = 12313^2 + 4512^2 .

It is a cyclic number.

It is not a de Polignac number, because 171968113 - 2⁵ = 171968081 is a prime.

It is not a weakly prime, because it can be changed into another prime (171968143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85984056 + 85984057.

It is an arithmetic number, because the mean of its divisors is an integer number (85984057).

Almost surely, 2^171968113 is an apocalyptic number.

It is an amenable number.

171968113 is a deficient number, since it is larger than the sum of its proper divisors (1).

171968113 is an equidigital number, since it uses as much as digits as its factorization.

171968113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 37.

The square root of 171968113 is about 13113.6613117771. The cubic root of 171968113 is about 556.0954076479.

The spelling of 171968113 in words is "one hundred seventy-one million, nine hundred sixty-eight thousand, one hundred thirteen".