199168250 has 16 divisors (see below), whose sum is σ = 372843432. Its totient is φ = 79667200.

The previous prime is 199168231. The next prime is 199168253. The reversal of 199168250 is 52861991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28526281 + 170641969 = 5341^2 + 13063^2 .

It is a junction number, because it is equal to n+sod(n) for n = 199168198 and 199168207.

It is not an unprimeable number, because it can be changed into a prime (199168253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398087 + ... + 398586.

Almost surely, 2^199168250 is an apocalyptic number.

199168250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199168250 is a deficient number, since it is larger than the sum of its proper divisors (173675182).

199168250 is an equidigital number, since it uses as much as digits as its factorization.

199168250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796690 (or 796680 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 199168250 is about 14112.6981828423. The cubic root of 199168250 is about 583.9917373104.

The spelling of 199168250 in words is "one hundred ninety-nine million, one hundred sixty-eight thousand, two hundred fifty".