168871868 has 12 divisors (see below), whose sum is σ = 322391832. Its totient is φ = 76759920.

The previous prime is 168871861. The next prime is 168871909. The reversal of 168871868 is 868178861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168871861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918955 + ... + 1919042.

It is an arithmetic number, because the mean of its divisors is an integer number (26865986).

Almost surely, 2^168871868 is an apocalyptic number.

It is an amenable number.

168871868 is a deficient number, since it is larger than the sum of its proper divisors (153519964).

168871868 is a wasteful number, since it uses less digits than its factorization.

168871868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838012 (or 3838010 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 53.

The square root of 168871868 is about 12995.0709116957. The cubic root of 168871868 is about 552.7377196156.

The spelling of 168871868 in words is "one hundred sixty-eight million, eight hundred seventy-one thousand, eight hundred sixty-eight".