205385366 has 8 divisors (see below), whose sum is σ = 318701520. Its totient is φ = 99151528.

The previous prime is 205385357. The next prime is 205385371. The reversal of 205385366 is 663583502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770506 + ... + 1770621.

It is an arithmetic number, because the mean of its divisors is an integer number (39837690).

Almost surely, 2^205385366 is an apocalyptic number.

205385366 is a deficient number, since it is larger than the sum of its proper divisors (113316154).

205385366 is a wasteful number, since it uses less digits than its factorization.

205385366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541158.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 205385366 is about 14331.2723091846. The cubic root of 205385366 is about 590.0060958865.

The spelling of 205385366 in words is "two hundred five million, three hundred eighty-five thousand, three hundred sixty-six".