199065613 has 2 divisors, whose sum is σ = 199065614. Its totient is φ = 199065612.

The previous prime is 199065593. The next prime is 199065637. The reversal of 199065613 is 316560991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130804969 + 68260644 = 11437^2 + 8262^2 .

It is a cyclic number.

It is not a de Polignac number, because 199065613 - 2⁹ = 199065101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199065683) 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, 99532806 + 99532807.

It is an arithmetic number, because the mean of its divisors is an integer number (99532807).

Almost surely, 2^199065613 is an apocalyptic number.

It is an amenable number.

199065613 is a deficient number, since it is larger than the sum of its proper divisors (1).

199065613 is an equidigital number, since it uses as much as digits as its factorization.

199065613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 199065613 is about 14109.0613791280. The cubic root of 199065613 is about 583.8914042854.

The spelling of 199065613 in words is "one hundred ninety-nine million, sixty-five thousand, six hundred thirteen".