198748213597 has 12 divisors (see below), whose sum is σ = 203636392960. Its totient is φ = 193872344400.

The previous prime is 198748213583. The next prime is 198748213619. The reversal of 198748213597 is 795312847891.

It is not a de Polignac number, because 198748213597 - 2²⁷ = 198613995869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198748213537) 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 in 11 ways as a sum of consecutive naturals, for example, 104548347 + ... + 104550247.

Almost surely, 2^198748213597 is an apocalyptic number.

It is an amenable number.

198748213597 is a deficient number, since it is larger than the sum of its proper divisors (4888179363).

198748213597 is an frugal number, since it uses more digits than its factorization.

198748213597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124 (or 3223 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 64.

The spelling of 198748213597 in words is "one hundred ninety-eight billion, seven hundred forty-eight million, two hundred thirteen thousand, five hundred ninety-seven".