199056019 has 2 divisors, whose sum is σ = 199056020. Its totient is φ = 199056018.

The previous prime is 199055981. The next prime is 199056031. The reversal of 199056019 is 910650991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199056019 - 2¹¹ = 199053971 is a prime.

It is a super-2 number, since 2×199056019² = 79246597400256722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199056079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99528009 + 99528010.

It is an arithmetic number, because the mean of its divisors is an integer number (99528010).

Almost surely, 2^199056019 is an apocalyptic number.

199056019 is a deficient number, since it is larger than the sum of its proper divisors (1).

199056019 is an equidigital number, since it uses as much as digits as its factorization.

199056019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 199056019 is about 14108.7213807630. The cubic root of 199056019 is about 583.8820238872.

The spelling of 199056019 in words is "one hundred ninety-nine million, fifty-six thousand, nineteen".