205919085 has 8 divisors (see below), whose sum is σ = 329470560. Its totient is φ = 109823504.

The previous prime is 205919059. The next prime is 205919107. The reversal of 205919085 is 580919502.

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

It is a cyclic number.

It is not a de Polignac number, because 205919085 - 2¹⁴ = 205902701 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 6863955 + ... + 6863984.

It is an arithmetic number, because the mean of its divisors is an integer number (41183820).

Almost surely, 2^205919085 is an apocalyptic number.

It is an amenable number.

205919085 is a deficient number, since it is larger than the sum of its proper divisors (123551475).

205919085 is a wasteful number, since it uses less digits than its factorization.

205919085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13727947.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 205919085 is about 14349.8810099596. The cubic root of 205919085 is about 590.5167215073.

The spelling of 205919085 in words is "two hundred five million, nine hundred nineteen thousand, eighty-five".