198130897872 has 120 divisors (see below), whose sum is σ = 584565543744. Its totient is φ = 62520809472.

The previous prime is 198130897819. The next prime is 198130897873. The reversal of 198130897872 is 278798031891.

198130897872 is a `hidden beast` number, since 198 + 1 + 308 + 9 + 78 + 72 = 666.

It is a super-3 number, since 3×198130897872³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198130897873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12903 + ... + 629625.

Almost surely, 2^198130897872 is an apocalyptic number.

198130897872 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 198130897872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292282771872).

198130897872 is an abundant number, since it is smaller than the sum of its proper divisors (386434645872).

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

198130897872 is a wasteful number, since it uses less digits than its factorization.

198130897872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616857 (or 616848 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The spelling of 198130897872 in words is "one hundred ninety-eight billion, one hundred thirty million, eight hundred ninety-seven thousand, eight hundred seventy-two".