199044161 has 2 divisors, whose sum is σ = 199044162. Its totient is φ = 199044160.

The previous prime is 199044121. The next prime is 199044191. The reversal of 199044161 is 161440991.

199044161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193071025 + 5973136 = 13895^2 + 2444^2 .

It is an emirp because it is prime and its reverse (161440991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199044161 - 2¹⁰ = 199043137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199044121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99522080 + 99522081.

It is an arithmetic number, because the mean of its divisors is an integer number (99522081).

Almost surely, 2^199044161 is an apocalyptic number.

It is an amenable number.

199044161 is a deficient number, since it is larger than the sum of its proper divisors (1).

199044161 is an equidigital number, since it uses as much as digits as its factorization.

199044161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 199044161 is about 14108.3011379826. The cubic root of 199044161 is about 583.8704294785.

The spelling of 199044161 in words is "one hundred ninety-nine million, forty-four thousand, one hundred sixty-one".