2108826689 has 2 divisors, whose sum is σ = 2108826690. Its totient is φ = 2108826688.

The previous prime is 2108826661. The next prime is 2108826703. The reversal of 2108826689 is 9866288012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291324225 + 817502464 = 35935^2 + 28592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108826689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2108826619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054413344 + 1054413345.

It is an arithmetic number, because the mean of its divisors is an integer number (1054413345).

Almost surely, 2^2108826689 is an apocalyptic number.

It is an amenable number.

2108826689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108826689 is an equidigital number, since it uses as much as digits as its factorization.

2108826689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 2108826689 is about 45921.9630351317. The cubic root of 2108826689 is about 1282.3708275781.

The spelling of 2108826689 in words is "two billion, one hundred eight million, eight hundred twenty-six thousand, six hundred eighty-nine".