853116773 has 2 divisors, whose sum is σ = 853116774. Its totient is φ = 853116772.

The previous prime is 853116769. The next prime is 853116791. The reversal of 853116773 is 377611358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451435009 + 401681764 = 21247^2 + 20042^2 .

It is a cyclic number.

It is not a de Polignac number, because 853116773 - 2² = 853116769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 853116773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853116703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426558386 + 426558387.

It is an arithmetic number, because the mean of its divisors is an integer number (426558387).

Almost surely, 2^853116773 is an apocalyptic number.

It is an amenable number.

853116773 is a deficient number, since it is larger than the sum of its proper divisors (1).

853116773 is an equidigital number, since it uses as much as digits as its factorization.

853116773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 853116773 is about 29208.1627802914. The cubic root of 853116773 is about 948.4246367005.

The spelling of 853116773 in words is "eight hundred fifty-three million, one hundred sixteen thousand, seven hundred seventy-three".