854691853 has 2 divisors, whose sum is σ = 854691854. Its totient is φ = 854691852.

The previous prime is 854691821. The next prime is 854691869. The reversal of 854691853 is 358196458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776068164 + 78623689 = 27858^2 + 8867^2 .

It is a cyclic number.

It is not a de Polignac number, because 854691853 - 2⁵ = 854691821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 854691797 and 854691806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854691353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427345926 + 427345927.

It is an arithmetic number, because the mean of its divisors is an integer number (427345927).

Almost surely, 2^854691853 is an apocalyptic number.

It is an amenable number.

854691853 is a deficient number, since it is larger than the sum of its proper divisors (1).

854691853 is an equidigital number, since it uses as much as digits as its factorization.

854691853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 49.

The square root of 854691853 is about 29235.1133570575. The cubic root of 854691853 is about 949.0079590628.

The spelling of 854691853 in words is "eight hundred fifty-four million, six hundred ninety-one thousand, eight hundred fifty-three".