2109465779 has 2 divisors, whose sum is σ = 2109465780. Its totient is φ = 2109465778.

The previous prime is 2109465737. The next prime is 2109465913. The reversal of 2109465779 is 9775649012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2109465779 - 2²⁰ = 2108417203 is a prime.

It is not a weakly prime, because it can be changed into another prime (2109464779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054732889 + 1054732890.

It is an arithmetic number, because the mean of its divisors is an integer number (1054732890).

Almost surely, 2^2109465779 is an apocalyptic number.

2109465779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109465779 is an equidigital number, since it uses as much as digits as its factorization.

2109465779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 2109465779 is about 45928.9209431269. The cubic root of 2109465779 is about 1282.5003573622.

The spelling of 2109465779 in words is "two billion, one hundred nine million, four hundred sixty-five thousand, seven hundred seventy-nine".