2689343641 has 2 divisors, whose sum is σ = 2689343642. Its totient is φ = 2689343640.

The previous prime is 2689343633. The next prime is 2689343659. The reversal of 2689343641 is 1463439862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2673303616 + 16040025 = 51704^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689343641 - 2³ = 2689343633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2689343591 and 2689343600.

It is not a weakly prime, because it can be changed into another prime (2689343621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344671820 + 1344671821.

It is an arithmetic number, because the mean of its divisors is an integer number (1344671821).

Almost surely, 2^2689343641 is an apocalyptic number.

It is an amenable number.

2689343641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689343641 is an equidigital number, since it uses as much as digits as its factorization.

2689343641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 46.

The square root of 2689343641 is about 51858.8819875631. The cubic root of 2689343641 is about 1390.6422925736.

The spelling of 2689343641 in words is "two billion, six hundred eighty-nine million, three hundred forty-three thousand, six hundred forty-one".