205949063 has 4 divisors (see below), whose sum is σ = 206135880. Its totient is φ = 205762248.

The previous prime is 205949057. The next prime is 205949077. The reversal of 205949063 is 360949502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205949063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205949053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91745 + ... + 93962.

It is an arithmetic number, because the mean of its divisors is an integer number (51533970).

Almost surely, 2^205949063 is an apocalyptic number.

205949063 is a deficient number, since it is larger than the sum of its proper divisors (186817).

205949063 is a wasteful number, since it uses less digits than its factorization.

205949063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186816.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 205949063 is about 14350.9255102241. The cubic root of 205949063 is about 590.5453762113.

The spelling of 205949063 in words is "two hundred five million, nine hundred forty-nine thousand, sixty-three".