2608981439 has 2 divisors, whose sum is σ = 2608981440. Its totient is φ = 2608981438.

The previous prime is 2608981391. The next prime is 2608981457. The reversal of 2608981439 is 9341898062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2608981439 - 2²⁸ = 2340545983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2608981939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304490719 + 1304490720.

It is an arithmetic number, because the mean of its divisors is an integer number (1304490720).

Almost surely, 2^2608981439 is an apocalyptic number.

2608981439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2608981439 is an equidigital number, since it uses as much as digits as its factorization.

2608981439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 2608981439 is about 51078.1894647804. The cubic root of 2608981439 is about 1376.6503931838.

The spelling of 2608981439 in words is "two billion, six hundred eight million, nine hundred eighty-one thousand, four hundred thirty-nine".