2646788537 has 2 divisors, whose sum is σ = 2646788538. Its totient is φ = 2646788536.

The previous prime is 2646788519. The next prime is 2646788539. The reversal of 2646788537 is 7358876462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1488339241 + 1158449296 = 38579^2 + 34036^2 .

It is a cyclic number.

It is not a de Polignac number, because 2646788537 - 2²⁶ = 2579679673 is a prime.

Together with 2646788539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2646788539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323394268 + 1323394269.

It is an arithmetic number, because the mean of its divisors is an integer number (1323394269).

Almost surely, 2^2646788537 is an apocalyptic number.

It is an amenable number.

2646788537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646788537 is an equidigital number, since it uses as much as digits as its factorization.

2646788537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 56.

The square root of 2646788537 is about 51446.9487627789. The cubic root of 2646788537 is about 1383.2682700258.

The spelling of 2646788537 in words is "two billion, six hundred forty-six million, seven hundred eighty-eight thousand, five hundred thirty-seven".