218198 has 8 divisors (see below), whose sum is σ = 331680. Its totient is φ = 107640.

The previous prime is 218191. The next prime is 218213. The reversal of 218198 is 891812.

218198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×218198² = 95220734408, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 218198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218191) 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, 533 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (41460).

2²¹⁸¹⁹⁸ is an apocalyptic number.

218198 is a deficient number, since it is larger than the sum of its proper divisors (113482).

218198 is a wasteful number, since it uses less digits than its factorization.

218198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462.

The product of its digits is 1152, while the sum is 29.

The square root of 218198 is about 467.1166877773. The cubic root of 218198 is about 60.2028320651.

The spelling of 218198 in words is "two hundred eighteen thousand, one hundred ninety-eight".