2645250637 has 2 divisors, whose sum is σ = 2645250638. Its totient is φ = 2645250636.

The previous prime is 2645250607. The next prime is 2645250659. The reversal of 2645250637 is 7360525462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2224631556 + 420619081 = 47166^2 + 20509^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645250637 - 2¹⁹ = 2644726349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2645250637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645250607) 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, 1322625318 + 1322625319.

It is an arithmetic number, because the mean of its divisors is an integer number (1322625319).

Almost surely, 2^2645250637 is an apocalyptic number.

It is an amenable number.

2645250637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645250637 is an equidigital number, since it uses as much as digits as its factorization.

2645250637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 2645250637 is about 51432.0001263805. Note that the first 3 decimals coincide. The cubic root of 2645250637 is about 1383.0003049807. Note that the first 3 decimals are identical.

The spelling of 2645250637 in words is "two billion, six hundred forty-five million, two hundred fifty thousand, six hundred thirty-seven".