205768188 has 30 divisors (see below), whose sum is σ = 537919536. Its totient is φ = 68589288.

The previous prime is 205768181. The next prime is 205768193. The reversal of 205768188 is 881867502.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205768181) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 317220 + ... + 317867.

Almost surely, 2^205768188 is an apocalyptic number.

It is an amenable number.

205768188 is an abundant number, since it is smaller than the sum of its proper divisors (332151348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205768188 is a wasteful number, since it uses less digits than its factorization.

205768188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635103 (or 635092 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 205768188 is about 14344.6222675956. The cubic root of 205768188 is about 590.3724431913.

The spelling of 205768188 in words is "two hundred five million, seven hundred sixty-eight thousand, one hundred eighty-eight".