2198210591 has 2 divisors, whose sum is σ = 2198210592. Its totient is φ = 2198210590.

The previous prime is 2198210587. The next prime is 2198210593. The reversal of 2198210591 is 1950128912.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2198210591 - 2² = 2198210587 is a prime.

Together with 2198210593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198210593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099105295 + 1099105296.

It is an arithmetic number, because the mean of its divisors is an integer number (1099105296).

Almost surely, 2^2198210591 is an apocalyptic number.

2198210591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198210591 is an equidigital number, since it uses as much as digits as its factorization.

2198210591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 2198210591 is about 46885.0785538427. The cubic root of 2198210591 is about 1300.2387315019.

The spelling of 2198210591 in words is "two billion, one hundred ninety-eight million, two hundred ten thousand, five hundred ninety-one".