2640837841 has 2 divisors, whose sum is σ = 2640837842. Its totient is φ = 2640837840.

The previous prime is 2640837799. The next prime is 2640837863. The reversal of 2640837841 is 1487380462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2611721025 + 29116816 = 51105^2 + 5396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2640837841 - 2¹⁵ = 2640805073 is a prime.

It is not a weakly prime, because it can be changed into another prime (2640831841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320418920 + 1320418921.

It is an arithmetic number, because the mean of its divisors is an integer number (1320418921).

Almost surely, 2^2640837841 is an apocalyptic number.

It is an amenable number.

2640837841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640837841 is an equidigital number, since it uses as much as digits as its factorization.

2640837841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 2640837841 is about 51389.0828970512. The cubic root of 2640837841 is about 1382.2308385154.

The spelling of 2640837841 in words is "two billion, six hundred forty million, eight hundred thirty-seven thousand, eight hundred forty-one".