2119708813 has 2 divisors, whose sum is σ = 2119708814. Its totient is φ = 2119708812.

The previous prime is 2119708781. The next prime is 2119708889. The reversal of 2119708813 is 3188079112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2102956164 + 16752649 = 45858^2 + 4093^2 .

It is a cyclic number.

It is not a de Polignac number, because 2119708813 - 2⁵ = 2119708781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2119808813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059854406 + 1059854407.

It is an arithmetic number, because the mean of its divisors is an integer number (1059854407).

Almost surely, 2^2119708813 is an apocalyptic number.

It is an amenable number.

2119708813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119708813 is an equidigital number, since it uses as much as digits as its factorization.

2119708813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 2119708813 is about 46040.2955355415. The cubic root of 2119708813 is about 1284.5728392901.

The spelling of 2119708813 in words is "two billion, one hundred nineteen million, seven hundred eight thousand, eight hundred thirteen".