2191139113 has 2 divisors, whose sum is σ = 2191139114. Its totient is φ = 2191139112.

The previous prime is 2191139101. The next prime is 2191139141. The reversal of 2191139113 is 3119311912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2164389529 + 26749584 = 46523^2 + 5172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2191139113 - 2²⁹ = 1654268201 is a prime.

It is a super-2 number, since 2×2191139113² = 9602181225036853538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2191136113) 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, 1095569556 + 1095569557.

It is an arithmetic number, because the mean of its divisors is an integer number (1095569557).

Almost surely, 2^2191139113 is an apocalyptic number.

It is an amenable number.

2191139113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2191139113 is an equidigital number, since it uses as much as digits as its factorization.

2191139113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 31.

The square root of 2191139113 is about 46809.6049224943. The cubic root of 2191139113 is about 1298.8429770435.

The spelling of 2191139113 in words is "two billion, one hundred ninety-one million, one hundred thirty-nine thousand, one hundred thirteen".