199760513 has 2 divisors, whose sum is σ = 199760514. Its totient is φ = 199760512.

The previous prime is 199760443. The next prime is 199760531. The reversal of 199760513 is 315067991.

Together with next prime (199760531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199713424 + 47089 = 14132^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 199760513 - 2²² = 195566209 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (199760563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99880256 + 99880257.

It is an arithmetic number, because the mean of its divisors is an integer number (99880257).

Almost surely, 2^199760513 is an apocalyptic number.

It is an amenable number.

199760513 is a deficient number, since it is larger than the sum of its proper divisors (1).

199760513 is an equidigital number, since it uses as much as digits as its factorization.

199760513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 199760513 is about 14133.6659434133. The cubic root of 199760513 is about 584.5700329995.

The spelling of 199760513 in words is "one hundred ninety-nine million, seven hundred sixty thousand, five hundred thirteen".