2644050391 has 2 divisors, whose sum is σ = 2644050392. Its totient is φ = 2644050390.

The previous prime is 2644050389. The next prime is 2644050397. The reversal of 2644050391 is 1930504462.

It is a happy number.

2644050391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2644050391 - 2¹ = 2644050389 is a prime.

Together with 2644050389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644050397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322025195 + 1322025196.

It is an arithmetic number, because the mean of its divisors is an integer number (1322025196).

Almost surely, 2^2644050391 is an apocalyptic number.

2644050391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644050391 is an equidigital number, since it uses as much as digits as its factorization.

2644050391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2644050391 is about 51420.3305220805. The cubic root of 2644050391 is about 1382.7911008971.

The spelling of 2644050391 in words is "two billion, six hundred forty-four million, fifty thousand, three hundred ninety-one".