198118255 has 16 divisors (see below), whose sum is σ = 252141120. Its totient is φ = 148925952.

The previous prime is 198118237. The next prime is 198118259. The reversal of 198118255 is 552811891.

It is a cyclic number.

It is not a de Polignac number, because 198118255 - 2⁵ = 198118223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198118259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62806 + ... + 65884.

It is an arithmetic number, because the mean of its divisors is an integer number (15758820).

Almost surely, 2^198118255 is an apocalyptic number.

198118255 is a deficient number, since it is larger than the sum of its proper divisors (54022865).

198118255 is a wasteful number, since it uses less digits than its factorization.

198118255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its digits is 28800, while the sum is 40.

The square root of 198118255 is about 14075.4486606999. The cubic root of 198118255 is about 582.9636799983.

The spelling of 198118255 in words is "one hundred ninety-eight million, one hundred eighteen thousand, two hundred fifty-five".