205018 has 8 divisors (see below), whose sum is σ = 335520. Its totient is φ = 93180.

The previous prime is 204983. The next prime is 205019. The reversal of 205018 is 810502.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 204992 and 205010.

It is not an unprimeable number, because it can be changed into a prime (205019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4638 + ... + 4681.

It is an arithmetic number, because the mean of its divisors is an integer number (41940).

2²⁰⁵⁰¹⁸ is an apocalyptic number.

205018 is a deficient number, since it is larger than the sum of its proper divisors (130502).

205018 is a wasteful number, since it uses less digits than its factorization.

205018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9332.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 205018 is about 452.7891341452. The cubic root of 205018 is about 58.9654111156.

The spelling of 205018 in words is "two hundred five thousand, eighteen".