2644423013 has 2 divisors, whose sum is σ = 2644423014. Its totient is φ = 2644423012.

The previous prime is 2644423009. The next prime is 2644423031. The reversal of 2644423013 is 3103244462.

Together with next prime (2644423031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2345755489 + 298667524 = 48433^2 + 17282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644423013 - 2² = 2644423009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644423513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322211506 + 1322211507.

It is an arithmetic number, because the mean of its divisors is an integer number (1322211507).

Almost surely, 2^2644423013 is an apocalyptic number.

It is an amenable number.

2644423013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644423013 is an equidigital number, since it uses as much as digits as its factorization.

2644423013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 2644423013 is about 51423.9536889182. The cubic root of 2644423013 is about 1382.8560560614.

Adding to 2644423013 its reverse (3103244462), we get a palindrome (5747667475).

The spelling of 2644423013 in words is "two billion, six hundred forty-four million, four hundred twenty-three thousand, thirteen".