199057193 has 2 divisors, whose sum is σ = 199057194. Its totient is φ = 199057192.

The previous prime is 199057171. The next prime is 199057207. The reversal of 199057193 is 391750991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165971689 + 33085504 = 12883^2 + 5752^2 .

It is a cyclic number.

It is not a de Polignac number, because 199057193 - 2⁸ = 199056937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199057123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99528596 + 99528597.

It is an arithmetic number, because the mean of its divisors is an integer number (99528597).

Almost surely, 2^199057193 is an apocalyptic number.

It is an amenable number.

199057193 is a deficient number, since it is larger than the sum of its proper divisors (1).

199057193 is an equidigital number, since it uses as much as digits as its factorization.

199057193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 44.

The square root of 199057193 is about 14108.7629861728. The cubic root of 199057193 is about 583.8831717654.

The spelling of 199057193 in words is "one hundred ninety-nine million, fifty-seven thousand, one hundred ninety-three".