199822019 has 2 divisors, whose sum is σ = 199822020. Its totient is φ = 199822018.

The previous prime is 199821997. The next prime is 199822027. The reversal of 199822019 is 910228991.

199822019 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 is a cyclic number.

It is not a de Polignac number, because 199822019 - 2⁸ = 199821763 is a prime.

It is a super-2 number, since 2×199822019² = 79857678554472722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (199822319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99911009 + 99911010.

It is an arithmetic number, because the mean of its divisors is an integer number (99911010).

Almost surely, 2^199822019 is an apocalyptic number.

199822019 is a deficient number, since it is larger than the sum of its proper divisors (1).

199822019 is an equidigital number, since it uses as much as digits as its factorization.

199822019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 199822019 is about 14135.8416445573. The cubic root of 199822019 is about 584.6300229585.

The spelling of 199822019 in words is "one hundred ninety-nine million, eight hundred twenty-two thousand, nineteen".