199000643 has 2 divisors, whose sum is σ = 199000644. Its totient is φ = 199000642.

The previous prime is 199000609. The next prime is 199000651. The reversal of 199000643 is 346000991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199000643 - 2⁶ = 199000579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199000663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99500321 + 99500322.

It is an arithmetic number, because the mean of its divisors is an integer number (99500322).

Almost surely, 2^199000643 is an apocalyptic number.

199000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

199000643 is an equidigital number, since it uses as much as digits as its factorization.

199000643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 199000643 is about 14106.7587701782. The cubic root of 199000643 is about 583.8278748930.

The spelling of 199000643 in words is "one hundred ninety-nine million, six hundred forty-three", and thus it is an aban number.