2103716809 has 2 divisors, whose sum is σ = 2103716810. Its totient is φ = 2103716808.

The previous prime is 2103716743. The next prime is 2103716837. The reversal of 2103716809 is 9086173012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1664395209 + 439321600 = 40797^2 + 20960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103716809 - 2¹¹ = 2103714761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2103716899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051858404 + 1051858405.

It is an arithmetic number, because the mean of its divisors is an integer number (1051858405).

Almost surely, 2^2103716809 is an apocalyptic number.

It is an amenable number.

2103716809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103716809 is an equidigital number, since it uses as much as digits as its factorization.

2103716809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2103716809 is about 45866.2927322451. The cubic root of 2103716809 is about 1281.3342225849.

The spelling of 2103716809 in words is "two billion, one hundred three million, seven hundred sixteen thousand, eight hundred nine".