168163672 has 16 divisors (see below), whose sum is σ = 329016240. Its totient is φ = 80426016.

The previous prime is 168163651. The next prime is 168163679. The reversal of 168163672 is 276361861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168163679) 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 3 ways as a sum of consecutive naturals, for example, 456783 + ... + 457150.

It is an arithmetic number, because the mean of its divisors is an integer number (20563515).

Almost surely, 2^168163672 is an apocalyptic number.

It is an amenable number.

168163672 is a deficient number, since it is larger than the sum of its proper divisors (160852568).

168163672 is a wasteful number, since it uses less digits than its factorization.

168163672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913962 (or 913958 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 168163672 is about 12967.7936442558. The cubic root of 168163672 is about 551.9639670521.

The spelling of 168163672 in words is "one hundred sixty-eight million, one hundred sixty-three thousand, six hundred seventy-two".