208118 has 4 divisors (see below), whose sum is σ = 312180. Its totient is φ = 104058.

The previous prime is 208111. The next prime is 208121. The reversal of 208118 is 811802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811802 = 2 ⋅405901.

It is a self number, because there is not a number n which added to its sum of digits gives 208118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208111) by changing a digit.

208118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52028 + ... + 52031.

It is an arithmetic number, because the mean of its divisors is an integer number (78045).

2²⁰⁸¹¹⁸ is an apocalyptic number.

208118 is a deficient number, since it is larger than the sum of its proper divisors (104062).

208118 is a wasteful number, since it uses less digits than its factorization.

208118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104061.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 208118 is about 456.1995177551. The cubic root of 208118 is about 59.2611235621.

The spelling of 208118 in words is "two hundred eight thousand, one hundred eighteen".