168871869 has 12 divisors (see below), whose sum is σ = 245481756. Its totient is φ = 111863232.

The previous prime is 168871861. The next prime is 168871909. The reversal of 168871869 is 968178861.

168871869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53846244 + 115025625 = 7338^2 + 10725^2 .

It is not a de Polignac number, because 168871869 - 2³ = 168871861 is a prime.

It is a super-2 number, since 2×168871869² = 57035416279106322, which contains 22 as substring.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58344 + ... + 61169.

It is an arithmetic number, because the mean of its divisors is an integer number (20456813).

Almost surely, 2^168871869 is an apocalyptic number.

It is an amenable number.

168871869 is a deficient number, since it is larger than the sum of its proper divisors (76609887).

168871869 is a wasteful number, since it uses less digits than its factorization.

168871869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119676 (or 119673 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 168871869 is about 12995.0709501718. The cubic root of 168871869 is about 552.7377207066.

The spelling of 168871869 in words is "one hundred sixty-eight million, eight hundred seventy-one thousand, eight hundred sixty-nine".