199242811 has 2 divisors, whose sum is σ = 199242812. Its totient is φ = 199242810.

The previous prime is 199242803. The next prime is 199242833. The reversal of 199242811 is 118242991.

199242811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199242811 - 2³ = 199242803 is a prime.

It is not a weakly prime, because it can be changed into another prime (199242311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99621405 + 99621406.

It is an arithmetic number, because the mean of its divisors is an integer number (99621406).

Almost surely, 2^199242811 is an apocalyptic number.

199242811 is a deficient number, since it is larger than the sum of its proper divisors (1).

199242811 is an equidigital number, since it uses as much as digits as its factorization.

199242811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 37.

The square root of 199242811 is about 14115.3395637512. The cubic root of 199242811 is about 584.0646029662.

The spelling of 199242811 in words is "one hundred ninety-nine million, two hundred forty-two thousand, eight hundred eleven".