204895138 has 32 divisors (see below), whose sum is σ = 359251200. Its totient is φ = 85824960.

The previous prime is 204895133. The next prime is 204895153. The reversal of 204895138 is 831598402.

204895138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204895138.

It is not an unprimeable number, because it can be changed into a prime (204895133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341763 + ... + 342361.

It is an arithmetic number, because the mean of its divisors is an integer number (11226600).

Almost surely, 2^204895138 is an apocalyptic number.

204895138 is a deficient number, since it is larger than the sum of its proper divisors (154356062).

204895138 is a wasteful number, since it uses less digits than its factorization.

204895138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 204895138 is about 14314.1586549821. The cubic root of 204895138 is about 589.5362994518.

The spelling of 204895138 in words is "two hundred four million, eight hundred ninety-five thousand, one hundred thirty-eight".