199195849 has 4 divisors (see below), whose sum is σ = 200716560. Its totient is φ = 197675140.

The previous prime is 199195807. The next prime is 199195853. The reversal of 199195849 is 948591991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199195849 - 2⁷ = 199195721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199195849.

It is not an unprimeable number, because it can be changed into a prime (199195349) 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, 760159 + ... + 760420.

It is an arithmetic number, because the mean of its divisors is an integer number (50179140).

Almost surely, 2^199195849 is an apocalyptic number.

It is an amenable number.

199195849 is a deficient number, since it is larger than the sum of its proper divisors (1520711).

199195849 is a wasteful number, since it uses less digits than its factorization.

199195849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520710.

The product of its digits is 1049760, while the sum is 55.

The square root of 199195849 is about 14113.6759563198. The cubic root of 199195849 is about 584.0187108927.

The spelling of 199195849 in words is "one hundred ninety-nine million, one hundred ninety-five thousand, eight hundred forty-nine".