2191329029 has 2 divisors, whose sum is σ = 2191329030. Its totient is φ = 2191329028.

The previous prime is 2191329013. The next prime is 2191329067. The reversal of 2191329029 is 9209231912.

It is an a-pointer prime, because the next prime (2191329067) can be obtained adding 2191329029 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2189304100 + 2024929 = 46790^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 2191329029 - 2⁴ = 2191329013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2191328983 and 2191329001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2191329079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095664514 + 1095664515.

It is an arithmetic number, because the mean of its divisors is an integer number (1095664515).

Almost surely, 2^2191329029 is an apocalyptic number.

It is an amenable number.

2191329029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2191329029 is an equidigital number, since it uses as much as digits as its factorization.

2191329029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 2191329029 is about 46811.6334792966. The cubic root of 2191329029 is about 1298.8805015036.

The spelling of 2191329029 in words is "two billion, one hundred ninety-one million, three hundred twenty-nine thousand, twenty-nine".