785489984593 has 2 divisors, whose sum is σ = 785489984594. Its totient is φ = 785489984592.

The previous prime is 785489984533. The next prime is 785489984623. The reversal of 785489984593 is 395489984587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 785267139409 + 222845184 = 886153^2 + 14928^2 .

It is an emirp because it is prime and its reverse (395489984587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 785489984593 - 2²¹ = 785487887441 is a prime.

It is a super-2 number, since 2×785489984593² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (785489984533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392744992296 + 392744992297.

It is an arithmetic number, because the mean of its divisors is an integer number (392744992297).

Almost surely, 2^785489984593 is an apocalyptic number.

It is an amenable number.

785489984593 is a deficient number, since it is larger than the sum of its proper divisors (1).

785489984593 is an equidigital number, since it uses as much as digits as its factorization.

785489984593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3135283200, while the sum is 79.

The spelling of 785489984593 in words is "seven hundred eighty-five billion, four hundred eighty-nine million, nine hundred eighty-four thousand, five hundred ninety-three".