2689131839 has 2 divisors, whose sum is σ = 2689131840. Its totient is φ = 2689131838.

The previous prime is 2689131827. The next prime is 2689131889. The reversal of 2689131839 is 9381319862.

It is an a-pointer prime, because the next prime (2689131889) can be obtained adding 2689131839 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689131839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689131889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344565919 + 1344565920.

It is an arithmetic number, because the mean of its divisors is an integer number (1344565920).

Almost surely, 2^2689131839 is an apocalyptic number.

2689131839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689131839 is an equidigital number, since it uses as much as digits as its factorization.

2689131839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 2689131839 is about 51856.8398477964. The cubic root of 2689131839 is about 1390.6057844647.

The spelling of 2689131839 in words is "two billion, six hundred eighty-nine million, one hundred thirty-one thousand, eight hundred thirty-nine".