2540082709 has 2 divisors, whose sum is σ = 2540082710. Its totient is φ = 2540082708.

The previous prime is 2540082689. The next prime is 2540082719. The reversal of 2540082709 is 9072800452.

2540082709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1405875025 + 1134207684 = 37495^2 + 33678^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540082709 - 2¹⁷ = 2539951637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540082719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270041354 + 1270041355.

It is an arithmetic number, because the mean of its divisors is an integer number (1270041355).

Almost surely, 2^2540082709 is an apocalyptic number.

It is an amenable number.

2540082709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540082709 is an equidigital number, since it uses as much as digits as its factorization.

2540082709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 2540082709 is about 50399.2332183735. The cubic root of 2540082709 is about 1364.4237991692.

The spelling of 2540082709 in words is "two billion, five hundred forty million, eighty-two thousand, seven hundred nine".