198794706496 has 21 divisors (see below), whose sum is σ = 394490323921. Its totient is φ = 99395569792.

The previous prime is 198794706479. The next prime is 198794706499. The reversal of 198794706496 is 694607497891.

The square root of 198794706496 is 445864.

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., 178726017600 + 20068688896 = 422760^2 + 141664^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198794706499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3539046 + ... + 3594778.

Almost surely, 2^198794706496 is an apocalyptic number.

198794706496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

198794706496 is the 445864-th square number.

It is an amenable number.

198794706496 is a deficient number, since it is larger than the sum of its proper divisors (195695617425).

198794706496 is an frugal number, since it uses more digits than its factorization.

198794706496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111478 (or 55735 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 198794706496 in words is "one hundred ninety-eight billion, seven hundred ninety-four million, seven hundred six thousand, four hundred ninety-six".