199198133 has 8 divisors (see below), whose sum is σ = 201783960. Its totient is φ = 196623360.

The previous prime is 199198099. The next prime is 199198141. The reversal of 199198133 is 331891991.

It can be written as a sum of positive squares in 4 ways, for example, as 111999889 + 87198244 = 10583^2 + 9338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199198133 - 2⁸ = 199197877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199198183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37163 + ... + 42183.

It is an arithmetic number, because the mean of its divisors is an integer number (25222995).

Almost surely, 2^199198133 is an apocalyptic number.

It is an amenable number.

199198133 is a deficient number, since it is larger than the sum of its proper divisors (2585827).

199198133 is an equidigital number, since it uses as much as digits as its factorization.

199198133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527.

The product of its digits is 52488, while the sum is 44.

The square root of 199198133 is about 14113.7568705147. The cubic root of 199198133 is about 584.0209430236.

The spelling of 199198133 in words is "one hundred ninety-nine million, one hundred ninety-eight thousand, one hundred thirty-three".