199225168 has 20 divisors (see below), whose sum is σ = 396432340. Its totient is φ = 96920064.

The previous prime is 199225163. The next prime is 199225177. The reversal of 199225168 is 861522991.

It can be written as a sum of positive squares in 2 ways, for example, as 185177664 + 14047504 = 13608^2 + 3748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199225163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167673 + ... + 168856.

It is an arithmetic number, because the mean of its divisors is an integer number (19821617).

Almost surely, 2^199225168 is an apocalyptic number.

It is an amenable number.

199225168 is a deficient number, since it is larger than the sum of its proper divisors (197207172).

199225168 is a wasteful number, since it uses less digits than its factorization.

199225168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336574 (or 336568 counting only the distinct ones).

The product of its digits is 77760, while the sum is 43.

The square root of 199225168 is about 14114.7145915176. The cubic root of 199225168 is about 584.0473627691.

The spelling of 199225168 in words is "one hundred ninety-nine million, two hundred twenty-five thousand, one hundred sixty-eight".