163922868 has 18 divisors (see below), whose sum is σ = 414360674. Its totient is φ = 54640944.

The previous prime is 163922849. The next prime is 163922873. The reversal of 163922868 is 868229361.

163922868 is a `hidden beast` number, since 1 + 639 + 2 + 2 + 8 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 132987024 + 30935844 = 11532^2 + 5562^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2276671 + ... + 2276742.

Almost surely, 2^163922868 is an apocalyptic number.

163922868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

163922868 is an abundant number, since it is smaller than the sum of its proper divisors (250437806).

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

163922868 is a wasteful number, since it uses less digits than its factorization.

163922868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553423 (or 4553418 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 163922868 is about 12803.2366220421. The cubic root of 163922868 is about 547.2845414802.

The spelling of 163922868 in words is "one hundred sixty-three million, nine hundred twenty-two thousand, eight hundred sixty-eight".