2191329013 has 2 divisors, whose sum is σ = 2191329014. Its totient is φ = 2191329012.

The previous prime is 2191329011. The next prime is 2191329029. The reversal of 2191329013 is 3109231912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1916863524 + 274465489 = 43782^2 + 16567^2 .

It is a cyclic number.

It is not a de Polignac number, because 2191329013 - 2¹ = 2191329011 is a prime.

Together with 2191329011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2191329011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095664506 + 1095664507.

It is an arithmetic number, because the mean of its divisors is an integer number (1095664507).

Almost surely, 2^2191329013 is an apocalyptic number.

It is an amenable number.

2191329013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2191329013 is an equidigital number, since it uses as much as digits as its factorization.

2191329013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 2191329013 is about 46811.6333083989. The cubic root of 2191329013 is about 1298.8804983423.

The spelling of 2191329013 in words is "two billion, one hundred ninety-one million, three hundred twenty-nine thousand, thirteen".