2198332991 has 2 divisors, whose sum is σ = 2198332992. Its totient is φ = 2198332990.

The previous prime is 2198332933. The next prime is 2198333009. The reversal of 2198332991 is 1992338912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2198332991 - 2²⁶ = 2131224127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198332931) 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, 1099166495 + 1099166496.

It is an arithmetic number, because the mean of its divisors is an integer number (1099166496).

Almost surely, 2^2198332991 is an apocalyptic number.

2198332991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198332991 is an equidigital number, since it uses as much as digits as its factorization.

2198332991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 2198332991 is about 46886.3838550170. The cubic root of 2198332991 is about 1300.2628642014.

The spelling of 2198332991 in words is "two billion, one hundred ninety-eight million, three hundred thirty-two thousand, nine hundred ninety-one".