2650637789 has 2 divisors, whose sum is σ = 2650637790. Its totient is φ = 2650637788.

The previous prime is 2650637767. The next prime is 2650637791. The reversal of 2650637789 is 9877360562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2564612164 + 86025625 = 50642^2 + 9275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2650637789 is a prime.

It is a Sophie Germain prime.

Together with 2650637791, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2650637789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2650637189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325318894 + 1325318895.

It is an arithmetic number, because the mean of its divisors is an integer number (1325318895).

Almost surely, 2^2650637789 is an apocalyptic number.

It is an amenable number.

2650637789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650637789 is an equidigital number, since it uses as much as digits as its factorization.

2650637789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The square root of 2650637789 is about 51484.3450866377. The cubic root of 2650637789 is about 1383.9385123443.

The spelling of 2650637789 in words is "two billion, six hundred fifty million, six hundred thirty-seven thousand, seven hundred eighty-nine".