2106876689 has 2 divisors, whose sum is σ = 2106876690. Its totient is φ = 2106876688.

The previous prime is 2106876683. The next prime is 2106876697. The reversal of 2106876689 is 9866786012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2106075664 + 801025 = 45892^2 + 895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106876689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2106876689.

It is not a weakly prime, because it can be changed into another prime (2106876683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053438344 + 1053438345.

It is an arithmetic number, because the mean of its divisors is an integer number (1053438345).

Almost surely, 2^2106876689 is an apocalyptic number.

It is an amenable number.

2106876689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106876689 is an equidigital number, since it uses as much as digits as its factorization.

2106876689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 2106876689 is about 45900.7264539462. The cubic root of 2106876689 is about 1281.9754427439.

The spelling of 2106876689 in words is "two billion, one hundred six million, eight hundred seventy-six thousand, six hundred eighty-nine".