205118 has 4 divisors (see below), whose sum is σ = 307680. Its totient is φ = 102558.

The previous prime is 205111. The next prime is 205129. The reversal of 205118 is 811502.

205118 is digitally balanced in base 2 and base 3, because in such bases 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 junction number, because it is equal to n+sod(n) for n = 205096 and 205105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205111) by changing a digit.

205118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51278 + ... + 51281.

It is an arithmetic number, because the mean of its divisors is an integer number (76920).

2²⁰⁵¹¹⁸ is an apocalyptic number.

205118 is a deficient number, since it is larger than the sum of its proper divisors (102562).

205118 is a wasteful number, since it uses less digits than its factorization.

205118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102561.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 205118 is about 452.8995473612. The cubic root of 205118 is about 58.9749965872.

It can be divided in two parts, 205 and 118, that added together give a palindrome (323).

The spelling of 205118 in words is "two hundred five thousand, one hundred eighteen".