198917648596 has 6 divisors (see below), whose sum is σ = 348105885050. Its totient is φ = 99458824296.

The previous prime is 198917648521. The next prime is 198917648597. The reversal of 198917648596 is 695846719891.

It can be written as a sum of positive squares in only one way, i.e., 126294944400 + 72622704196 = 355380^2 + 269486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198917648597) by changing a digit.

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 as a sum of consecutive naturals, namely, 24864706071 + ... + 24864706078.

Almost surely, 2^198917648596 is an apocalyptic number.

It is an amenable number.

198917648596 is a deficient number, since it is larger than the sum of its proper divisors (149188236454).

198917648596 is a wasteful number, since it uses less digits than its factorization.

198917648596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49729412153 (or 49729412151 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 73.

The spelling of 198917648596 in words is "one hundred ninety-eight billion, nine hundred seventeen million, six hundred forty-eight thousand, five hundred ninety-six".