198944545024 has 81 divisors (see below), whose sum is σ = 404614082691. Its totient is φ = 97627484160.

The previous prime is 198944544983. The next prime is 198944545091. The reversal of 198944545024 is 420545449891.

The square root of 198944545024 is 446032.

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

It can be written as a sum of positive squares in 4 ways, for example, as 7478790400 + 191465754624 = 86480^2 + 437568^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 435327004 + ... + 435327460.

Almost surely, 2^198944545024 is an apocalyptic number.

198944545024 is the 446032-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198944545024

198944545024 is an abundant number, since it is smaller than the sum of its proper divisors (205669537667).

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

198944545024 is an frugal number, since it uses more digits than its factorization.

198944545024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 198944545024 in words is "one hundred ninety-eight billion, nine hundred forty-four million, five hundred forty-five thousand, twenty-four".