168163944 has 32 divisors (see below), whose sum is σ = 452749920. Its totient is φ = 51742656.

The previous prime is 168163943. The next prime is 168163951. The reversal of 168163944 is 449361861.

168163944 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×168163944² = 56558224123270272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168163896 and 168163905.

It is not an unprimeable number, because it can be changed into a prime (168163943) 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 7 ways as a sum of consecutive naturals, for example, 269182 + ... + 269805.

It is an arithmetic number, because the mean of its divisors is an integer number (14148435).

Almost surely, 2^168163944 is an apocalyptic number.

It is an amenable number.

168163944 is an abundant number, since it is smaller than the sum of its proper divisors (284585976).

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

168163944 is a wasteful number, since it uses less digits than its factorization.

168163944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539009 (or 539005 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 168163944 is about 12967.8041317719. The cubic root of 168163944 is about 551.9642646473.

The spelling of 168163944 in words is "one hundred sixty-eight million, one hundred sixty-three thousand, nine hundred forty-four".