2563673939 has 2 divisors, whose sum is σ = 2563673940. Its totient is φ = 2563673938.

The previous prime is 2563673911. The next prime is 2563673963. The reversal of 2563673939 is 9393763652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2563673939 - 2²⁸ = 2295238483 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2563673969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281836969 + 1281836970.

It is an arithmetic number, because the mean of its divisors is an integer number (1281836970).

Almost surely, 2^2563673939 is an apocalyptic number.

2563673939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563673939 is an equidigital number, since it uses as much as digits as its factorization.

2563673939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 53.

The square root of 2563673939 is about 50632.7358435232. The cubic root of 2563673939 is about 1368.6348557143.

The spelling of 2563673939 in words is "two billion, five hundred sixty-three million, six hundred seventy-three thousand, nine hundred thirty-nine".