198473081 has 2 divisors, whose sum is σ = 198473082. Its totient is φ = 198473080.

The previous prime is 198473063. The next prime is 198473101. The reversal of 198473081 is 180374891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193655056 + 4818025 = 13916^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 198473081 - 2¹⁴ = 198456697 is a prime.

It is a super-2 number, since 2×198473081² = 78783127763265122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198473021) 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 as a sum of consecutive naturals, namely, 99236540 + 99236541.

It is an arithmetic number, because the mean of its divisors is an integer number (99236541).

Almost surely, 2^198473081 is an apocalyptic number.

It is an amenable number.

198473081 is a deficient number, since it is larger than the sum of its proper divisors (1).

198473081 is an equidigital number, since it uses as much as digits as its factorization.

198473081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 198473081 is about 14088.0474516521. The cubic root of 198473081 is about 583.3114980307.

The spelling of 198473081 in words is "one hundred ninety-eight million, four hundred seventy-three thousand, eighty-one".