205065163 has 4 divisors (see below), whose sum is σ = 205102008. Its totient is φ = 205028320.

The previous prime is 205065139. The next prime is 205065181. The reversal of 205065163 is 361560502.

205065163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205065163 - 2²¹ = 202968011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205065193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8173 + ... + 21838.

It is an arithmetic number, because the mean of its divisors is an integer number (51275502).

Almost surely, 2^205065163 is an apocalyptic number.

205065163 is a deficient number, since it is larger than the sum of its proper divisors (36845).

205065163 is an equidigital number, since it uses as much as digits as its factorization.

205065163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36844.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 205065163 is about 14320.0964731387. The cubic root of 205065163 is about 589.6993229986.

The spelling of 205065163 in words is "two hundred five million, sixty-five thousand, one hundred sixty-three".