2685000509 has 2 divisors, whose sum is σ = 2685000510. Its totient is φ = 2685000508.

The previous prime is 2685000481. The next prime is 2685000529. The reversal of 2685000509 is 9050005862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2396102500 + 288898009 = 48950^2 + 16997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2685000509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685000529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342500254 + 1342500255.

It is an arithmetic number, because the mean of its divisors is an integer number (1342500255).

Almost surely, 2^2685000509 is an apocalyptic number.

It is an amenable number.

2685000509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685000509 is an equidigital number, since it uses as much as digits as its factorization.

2685000509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2685000509 is about 51816.9905436431. The cubic root of 2685000509 is about 1389.8932873583.

The spelling of 2685000509 in words is "two billion, six hundred eighty-five million, five hundred nine", and thus it is an aban number.