198413568 has 54 divisors (see below), whose sum is σ = 572081874. Its totient is φ = 66137088.

The previous prime is 198413521. The next prime is 198413623. The reversal of 198413568 is 865314891.

198413568 is a `hidden beast` number, since 1 + 9 + 84 + 1 + 3 + 568 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100641024 + 97772544 = 10032^2 + 9888^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40755 + ... + 45362.

Almost surely, 2^198413568 is an apocalyptic number.

198413568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198413568 is an abundant number, since it is smaller than the sum of its proper divisors (373668306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198413568 is an equidigital number, since it uses as much as digits as its factorization.

198413568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86139 (or 86122 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 198413568 is about 14085.9351127286. The cubic root of 198413568 is about 583.2531893887.

It can be divided in two parts, 19841 and 3568, that added together give a square (23409 = 153²).

The spelling of 198413568 in words is "one hundred ninety-eight million, four hundred thirteen thousand, five hundred sixty-eight".