2809825087 has 2 divisors, whose sum is σ = 2809825088. Its totient is φ = 2809825086.

The previous prime is 2809825049. The next prime is 2809825097. The reversal of 2809825087 is 7805289082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2809825087 - 2⁷ = 2809824959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2809825087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2809825097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404912543 + 1404912544.

It is an arithmetic number, because the mean of its divisors is an integer number (1404912544).

Almost surely, 2^2809825087 is an apocalyptic number.

2809825087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2809825087 is an equidigital number, since it uses as much as digits as its factorization.

2809825087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 2809825087 is about 53007.7832681202. The cubic root of 2809825087 is about 1411.1064010201.

The spelling of 2809825087 in words is "two billion, eight hundred nine million, eight hundred twenty-five thousand, eighty-seven".