199065863 has 2 divisors, whose sum is σ = 199065864. Its totient is φ = 199065862.

The previous prime is 199065847. The next prime is 199065871. The reversal of 199065863 is 368560991.

199065863 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 199065863 - 2⁴ = 199065847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199065803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99532931 + 99532932.

It is an arithmetic number, because the mean of its divisors is an integer number (99532932).

Almost surely, 2^199065863 is an apocalyptic number.

199065863 is a deficient number, since it is larger than the sum of its proper divisors (1).

199065863 is an equidigital number, since it uses as much as digits as its factorization.

199065863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 199065863 is about 14109.0702386798. The cubic root of 199065863 is about 583.8916487154.

The spelling of 199065863 in words is "one hundred ninety-nine million, sixty-five thousand, eight hundred sixty-three".