198906895320 has 256 divisors, whose sum is σ = 688490772480. Its totient is φ = 45031526400.

The previous prime is 198906895289. The next prime is 198906895337. The reversal of 198906895320 is 23598609891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40832485 + ... + 40837355.

It is an arithmetic number, because the mean of its divisors is an integer number (2689417080).

Almost surely, 2^198906895320 is an apocalyptic number.

198906895320 is a gapful number since it is divisible by the number (10) 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 198906895320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344245386240).

198906895320 is an abundant number, since it is smaller than the sum of its proper divisors (489583877160).

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

198906895320 is a wasteful number, since it uses less digits than its factorization.

198906895320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346 (or 5342 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 198906895320 in words is "one hundred ninety-eight billion, nine hundred six million, eight hundred ninety-five thousand, three hundred twenty".