891000168 has 32 divisors (see below), whose sum is σ = 2244512160. Its totient is φ = 294731840.

The previous prime is 891000163. The next prime is 891000169. The reversal of 891000168 is 861000198.

891000168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

891000168 is a strobogrammatic number because it is the same when read upside-down.

It is not an unprimeable number, because it can be changed into a prime (891000163) 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, 138555 + ... + 144842.

It is an arithmetic number, because the mean of its divisors is an integer number (70141005).

Almost surely, 2^891000168 is an apocalyptic number.

It is an amenable number.

891000168 is an abundant number, since it is smaller than the sum of its proper divisors (1353511992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

891000168 is a wasteful number, since it uses less digits than its factorization.

891000168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283537 (or 283533 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 891000168 is about 29849.6259273043. The cubic root of 891000168 is about 962.2603594775.

The spelling of 891000168 in words is "eight hundred ninety-one million, one hundred sixty-eight", and thus it is an aban number.