198374239872 has 96 divisors (see below), whose sum is σ = 571121460000. Its totient is φ = 66092438016.

The previous prime is 198374239823. The next prime is 198374239879. The reversal of 198374239872 is 278932473891.

198374239872 is a `hidden beast` number, since 1 + 98 + 37 + 423 + 98 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (198374239879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2377029 + ... + 2459067.

It is an arithmetic number, because the mean of its divisors is an integer number (5949181875).

Almost surely, 2^198374239872 is an apocalyptic number.

198374239872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198374239872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285560730000).

198374239872 is an abundant number, since it is smaller than the sum of its proper divisors (372747220128).

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

198374239872 is a wasteful number, since it uses less digits than its factorization.

198374239872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84158 (or 84143 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 198374239872 in words is "one hundred ninety-eight billion, three hundred seventy-four million, two hundred thirty-nine thousand, eight hundred seventy-two".