204109918 has 4 divisors (see below), whose sum is σ = 306164880. Its totient is φ = 102054958.

The previous prime is 204109901. The next prime is 204109957. The reversal of 204109918 is 819901402.

204109918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51027478 + ... + 51027481.

It is an arithmetic number, because the mean of its divisors is an integer number (76541220).

Almost surely, 2^204109918 is an apocalyptic number.

204109918 is a deficient number, since it is larger than the sum of its proper divisors (102054962).

204109918 is a wasteful number, since it uses less digits than its factorization.

204109918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102054961.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 204109918 is about 14286.7042385569. The cubic root of 204109918 is about 588.7822417030.

The spelling of 204109918 in words is "two hundred four million, one hundred nine thousand, nine hundred eighteen".