198580749376 has 63 divisors (see below), whose sum is σ = 402016536453. Its totient is φ = 97324281600.

The previous prime is 198580749347. The next prime is 198580749427. The reversal of 198580749376 is 673947085891.

The square root of 198580749376 is 445624.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 143156289600 + 55424459776 = 378360^2 + 235424^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 188944051 + ... + 188945101.

Almost surely, 2^198580749376 is an apocalyptic number.

198580749376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

198580749376 is the 445624-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198580749376

198580749376 is an abundant number, since it is smaller than the sum of its proper divisors (203435787077).

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

198580749376 is an frugal number, since it uses more digits than its factorization.

198580749376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 67.

The spelling of 198580749376 in words is "one hundred ninety-eight billion, five hundred eighty million, seven hundred forty-nine thousand, three hundred seventy-six".