2785309823 has 2 divisors, whose sum is σ = 2785309824. Its totient is φ = 2785309822.

The previous prime is 2785309811. The next prime is 2785309889. The reversal of 2785309823 is 3289035872.

2785309823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2785309823 - 2⁸ = 2785309567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2785399823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392654911 + 1392654912.

It is an arithmetic number, because the mean of its divisors is an integer number (1392654912).

Almost surely, 2^2785309823 is an apocalyptic number.

2785309823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785309823 is an equidigital number, since it uses as much as digits as its factorization.

2785309823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 2785309823 is about 52776.0345516789. The cubic root of 2785309823 is about 1406.9905167735.

The spelling of 2785309823 in words is "two billion, seven hundred eighty-five million, three hundred nine thousand, eight hundred twenty-three".