2644320541 has 2 divisors, whose sum is σ = 2644320542. Its totient is φ = 2644320540.

The previous prime is 2644320509. The next prime is 2644320577. The reversal of 2644320541 is 1450234462.

2644320541 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 can be written as a sum of positive squares in only one way, i.e., 2056985316 + 587335225 = 45354^2 + 24235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644320541 - 2⁵ = 2644320509 is a prime.

It is a super-2 number, since 2×2644320541² = 13984862247109065362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644320241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322160270 + 1322160271.

It is an arithmetic number, because the mean of its divisors is an integer number (1322160271).

Almost surely, 2^2644320541 is an apocalyptic number.

It is an amenable number.

2644320541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644320541 is an equidigital number, since it uses as much as digits as its factorization.

2644320541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 2644320541 is about 51422.9573342491. The cubic root of 2644320541 is about 1382.8381938340.

The spelling of 2644320541 in words is "two billion, six hundred forty-four million, three hundred twenty thousand, five hundred forty-one".