818198 has 4 divisors (see below), whose sum is σ = 1227300. Its totient is φ = 409098.

The previous prime is 818189. The next prime is 818219. The reversal of 818198 is 891818.

818198 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 plaindrome in base 15.

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, 204548 + ... + 204551.

It is an arithmetic number, because the mean of its divisors is an integer number (306825).

2⁸¹⁸¹⁹⁸ is an apocalyptic number.

818198 is a deficient number, since it is larger than the sum of its proper divisors (409102).

818198 is a wasteful number, since it uses less digits than its factorization.

818198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409101.

The product of its digits is 4608, while the sum is 35.

The square root of 818198 is about 904.5429785256. The cubic root of 818198 is about 93.5304027643.

The spelling of 818198 in words is "eight hundred eighteen thousand, one hundred ninety-eight".