2563939841 has 2 divisors, whose sum is σ = 2563939842. Its totient is φ = 2563939840.

The previous prime is 2563939823. The next prime is 2563939871. The reversal of 2563939841 is 1489393652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2490409216 + 73530625 = 49904^2 + 8575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563939841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2563939841.

It is not a weakly prime, because it can be changed into another prime (2563939871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281969920 + 1281969921.

It is an arithmetic number, because the mean of its divisors is an integer number (1281969921).

Almost surely, 2^2563939841 is an apocalyptic number.

It is an amenable number.

2563939841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563939841 is an equidigital number, since it uses as much as digits as its factorization.

2563939841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The square root of 2563939841 is about 50635.3615667944. The cubic root of 2563939841 is about 1368.6821719452.

The spelling of 2563939841 in words is "two billion, five hundred sixty-three million, nine hundred thirty-nine thousand, eight hundred forty-one".