168916885 has 4 divisors (see below), whose sum is σ = 202700268. Its totient is φ = 135133504.

The previous prime is 168916873. The next prime is 168916907. The reversal of 168916885 is 588619861.

168916885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118875409 + 50041476 = 10903^2 + 7074^2 .

It is a cyclic number.

It is not a de Polignac number, because 168916885 - 2⁹ = 168916373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16891684 + ... + 16891693.

It is an arithmetic number, because the mean of its divisors is an integer number (50675067).

Almost surely, 2^168916885 is an apocalyptic number.

It is an amenable number.

168916885 is a deficient number, since it is larger than the sum of its proper divisors (33783383).

168916885 is an equidigital number, since it uses as much as digits as its factorization.

168916885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33783382.

The product of its digits is 829440, while the sum is 52.

The square root of 168916885 is about 12996.8028760923. The cubic root of 168916885 is about 552.7868305846.

The spelling of 168916885 in words is "one hundred sixty-eight million, nine hundred sixteen thousand, eight hundred eighty-five".