198882461 has 2 divisors, whose sum is σ = 198882462. Its totient is φ = 198882460.

The previous prime is 198882413. The next prime is 198882469. The reversal of 198882461 is 164288891.

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., 186841561 + 12040900 = 13669^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 198882461 - 2²² = 194688157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198882469) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99441230 + 99441231.

It is an arithmetic number, because the mean of its divisors is an integer number (99441231).

Almost surely, 2^198882461 is an apocalyptic number.

It is an amenable number.

198882461 is a deficient number, since it is larger than the sum of its proper divisors (1).

198882461 is an equidigital number, since it uses as much as digits as its factorization.

198882461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 47.

The square root of 198882461 is about 14102.5693049175. The cubic root of 198882461 is about 583.7122779312.

The spelling of 198882461 in words is "one hundred ninety-eight million, eight hundred eighty-two thousand, four hundred sixty-one".