199500168 has 144 divisors (see below), whose sum is σ = 617364720. Its totient is φ = 53555712.

The previous prime is 199500157. The next prime is 199500179. The reversal of 199500168 is 861005991.

It is an interprime number because it is at equal distance from previous prime (199500157) and next prime (199500179).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 339571 + ... + 340157.

It is an arithmetic number, because the mean of its divisors is an integer number (4287255).

Almost surely, 2^199500168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199500168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308682360).

199500168 is an abundant number, since it is smaller than the sum of its proper divisors (417864552).

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

199500168 is a wasteful number, since it uses less digits than its factorization.

199500168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 199500168 is about 14124.4528389598. The cubic root of 199500168 is about 584.3159686927.

The spelling of 199500168 in words is "one hundred ninety-nine million, five hundred thousand, one hundred sixty-eight".