785435684749 has 2 divisors, whose sum is σ = 785435684750. Its totient is φ = 785435684748.

The previous prime is 785435684711. The next prime is 785435684753. The reversal of 785435684749 is 947486534587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 549392264100 + 236043420649 = 741210^2 + 485843^2 .

It is an emirp because it is prime and its reverse (947486534587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 785435684749 - 2¹⁵ = 785435651981 is a prime.

It is a super-2 number, since 2×785435684749² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (785435687749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392717842374 + 392717842375.

It is an arithmetic number, because the mean of its divisors is an integer number (392717842375).

Almost surely, 2^785435684749 is an apocalyptic number.

It is an amenable number.

785435684749 is a deficient number, since it is larger than the sum of its proper divisors (1).

785435684749 is an equidigital number, since it uses as much as digits as its factorization.

785435684749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 812851200, while the sum is 70.

The spelling of 785435684749 in words is "seven hundred eighty-five billion, four hundred thirty-five million, six hundred eighty-four thousand, seven hundred forty-nine".