171968743 has 2 divisors, whose sum is σ = 171968744. Its totient is φ = 171968742.

The previous prime is 171968717. The next prime is 171968759. The reversal of 171968743 is 347869171.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171968743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171968693 and 171968702.

It is a congruent number.

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, 85984371 + 85984372.

It is an arithmetic number, because the mean of its divisors is an integer number (85984372).

Almost surely, 2^171968743 is an apocalyptic number.

171968743 is a deficient number, since it is larger than the sum of its proper divisors (1).

171968743 is an equidigital number, since it uses as much as digits as its factorization.

171968743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 171968743 is about 13113.6853325066. The cubic root of 171968743 is about 556.0960867267.

The spelling of 171968743 in words is "one hundred seventy-one million, nine hundred sixty-eight thousand, seven hundred forty-three".