168871951 has 8 divisors (see below), whose sum is σ = 170280944. Its totient is φ = 167469120.

The previous prime is 168871949. The next prime is 168872021. The reversal of 168871951 is 159178861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168871951 - 2¹ = 168871949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168871921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64765 + ... + 67321.

It is an arithmetic number, because the mean of its divisors is an integer number (21285118).

Almost surely, 2^168871951 is an apocalyptic number.

168871951 is a deficient number, since it is larger than the sum of its proper divisors (1408993).

168871951 is a wasteful number, since it uses less digits than its factorization.

168871951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its digits is 120960, while the sum is 46.

The square root of 168871951 is about 12995.0741052139. The cubic root of 168871951 is about 552.7378101719.

The spelling of 168871951 in words is "one hundred sixty-eight million, eight hundred seventy-one thousand, nine hundred fifty-one".