2506694539 has 2 divisors, whose sum is σ = 2506694540. Its totient is φ = 2506694538.

The previous prime is 2506694507. The next prime is 2506694543. The reversal of 2506694539 is 9354966052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2506694539 - 2⁵ = 2506694507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2506694492 and 2506694501.

It is not a weakly prime, because it can be changed into another prime (2506694579) 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, 1253347269 + 1253347270.

It is an arithmetic number, because the mean of its divisors is an integer number (1253347270).

Almost surely, 2^2506694539 is an apocalyptic number.

2506694539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506694539 is an equidigital number, since it uses as much as digits as its factorization.

2506694539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The square root of 2506694539 is about 50066.9006330530. The cubic root of 2506694539 is about 1358.4191801950.

The spelling of 2506694539 in words is "two billion, five hundred six million, six hundred ninety-four thousand, five hundred thirty-nine".