199828019 has 2 divisors, whose sum is σ = 199828020. Its totient is φ = 199828018.

The previous prime is 199828007. The next prime is 199828091. The reversal of 199828019 is 910828991.

199828019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (199828091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199828019 - 2⁴ = 199828003 is a prime.

It is a super-2 number, since 2×199828019² = 79862474354928722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199822019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99914009 + 99914010.

It is an arithmetic number, because the mean of its divisors is an integer number (99914010).

Almost surely, 2^199828019 is an apocalyptic number.

199828019 is a deficient number, since it is larger than the sum of its proper divisors (1).

199828019 is an equidigital number, since it uses as much as digits as its factorization.

199828019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 47.

The square root of 199828019 is about 14136.0538694503. The cubic root of 199828019 is about 584.6358744075.

The spelling of 199828019 in words is "one hundred ninety-nine million, eight hundred twenty-eight thousand, nineteen".