198298855 has 16 divisors (see below), whose sum is σ = 241583328. Its totient is φ = 156240000.

The previous prime is 198298817. The next prime is 198298871. The reversal of 198298855 is 558892891.

It is a happy number.

It is not a de Polignac number, because 198298855 - 2²¹ = 196201703 is a prime.

It is a super-2 number, since 2×198298855² = 78644871788622050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198298796 and 198298805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105625 + ... + 107485.

It is an arithmetic number, because the mean of its divisors is an integer number (15098958).

Almost surely, 2^198298855 is an apocalyptic number.

198298855 is a deficient number, since it is larger than the sum of its proper divisors (43284473).

198298855 is a wasteful number, since it uses less digits than its factorization.

198298855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178.

The product of its digits is 2073600, while the sum is 55.

The square root of 198298855 is about 14081.8626253774. The cubic root of 198298855 is about 583.1407649176.

The spelling of 198298855 in words is "one hundred ninety-eight million, two hundred ninety-eight thousand, eight hundred fifty-five".