198075733249 has 9 divisors (see below), whose sum is σ = 198674356993. Its totient is φ = 197478911812.

The previous prime is 198075733237. The next prime is 198075733253. The reversal of 198075733249 is 942337570891.

The square root of 198075733249 is 445057.

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

198075733249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-198075733249 is a prime.

It is a super-2 number, since 2×198075733249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198075733193 and 198075733202.

It is not an unprimeable number, because it can be changed into a prime (198075733259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 266588772 + ... + 266589514.

Almost surely, 2^198075733249 is an apocalyptic number.

198075733249 is the 445057-th square number.

198075733249 is the 222529-th centered octagonal number.

It is an amenable number.

198075733249 is a deficient number, since it is larger than the sum of its proper divisors (598623744).

198075733249 is an frugal number, since it uses more digits than its factorization.

198075733249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 198075733249 in words is "one hundred ninety-eight billion, seventy-five million, seven hundred thirty-three thousand, two hundred forty-nine".