198539306496 has 320 divisors, whose sum is σ = 620733484800. Its totient is φ = 62482710528.

The previous prime is 198539306489. The next prime is 198539306509. The reversal of 198539306496 is 694603935891.

198539306496 is a `hidden beast` number, since 1 + 9 + 8 + 53 + 93 + 0 + 6 + 496 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88513951 + ... + 88516193.

It is an arithmetic number, because the mean of its divisors is an integer number (1939792140).

Almost surely, 2^198539306496 is an apocalyptic number.

198539306496 is a gapful number since it is divisible by the number (16) 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 198539306496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310366742400).

198539306496 is an abundant number, since it is smaller than the sum of its proper divisors (422194178304).

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

198539306496 is a wasteful number, since it uses less digits than its factorization.

198539306496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2604 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 63.

The spelling of 198539306496 in words is "one hundred ninety-eight billion, five hundred thirty-nine million, three hundred six thousand, four hundred ninety-six".