853170853 has 2 divisors, whose sum is σ = 853170854. Its totient is φ = 853170852.

The previous prime is 853170841. The next prime is 853170863. The reversal of 853170853 is 358071358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646328929 + 206841924 = 25423^2 + 14382^2 .

It is a cyclic number.

It is not a de Polignac number, because 853170853 - 2⁹ = 853170341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853170863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426585426 + 426585427.

It is an arithmetic number, because the mean of its divisors is an integer number (426585427).

Almost surely, 2^853170853 is an apocalyptic number.

It is an amenable number.

853170853 is a deficient number, since it is larger than the sum of its proper divisors (1).

853170853 is an equidigital number, since it uses as much as digits as its factorization.

853170853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 853170853 is about 29209.0885342217. The cubic root of 853170853 is about 948.4446768334. Note that the first 3 decimals are identical.

The spelling of 853170853 in words is "eight hundred fifty-three million, one hundred seventy thousand, eight hundred fifty-three".