198046081 has 2 divisors, whose sum is σ = 198046082. Its totient is φ = 198046080.

The previous prime is 198046049. The next prime is 198046087. The reversal of 198046081 is 180640891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106193025 + 91853056 = 10305^2 + 9584^2 .

It is a cyclic number.

It is not a de Polignac number, because 198046081 - 2⁵ = 198046049 is a prime.

It is a super-2 number, since 2×198046081² = 78444500398917122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198046081.

It is not a weakly prime, because it can be changed into another prime (198046087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99023040 + 99023041.

It is an arithmetic number, because the mean of its divisors is an integer number (99023041).

Almost surely, 2^198046081 is an apocalyptic number.

It is an amenable number.

198046081 is a deficient number, since it is larger than the sum of its proper divisors (1).

198046081 is an equidigital number, since it uses as much as digits as its factorization.

198046081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 198046081 is about 14072.8846012465. The cubic root of 198046081 is about 582.8928806485.

The spelling of 198046081 in words is "one hundred ninety-eight million, forty-six thousand, eighty-one".