2785457683819 has 2 divisors, whose sum is σ = 2785457683820. Its totient is φ = 2785457683818.

The previous prime is 2785457683763. The next prime is 2785457683843. The reversal of 2785457683819 is 9183867545872.

It is a happy number.

2785457683819 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 is a cyclic number.

It is not a de Polignac number, because 2785457683819 - 2⁷ = 2785457683691 is a prime.

It is a super-2 number, since 2×2785457683819² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2785457681819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392728841909 + 1392728841910.

It is an arithmetic number, because the mean of its divisors is an integer number (1392728841910).

Almost surely, 2^{2785457683819} is an apocalyptic number.

2785457683819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785457683819 is an equidigital number, since it uses as much as digits as its factorization.

2785457683819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 812851200, while the sum is 73.

The spelling of 2785457683819 in words is "two trillion, seven hundred eighty-five billion, four hundred fifty-seven million, six hundred eighty-three thousand, eight hundred nineteen".