853862819 has 4 divisors (see below), whose sum is σ = 854491560. Its totient is φ = 853234080.

The previous prime is 853862797. The next prime is 853862839. The reversal of 853862819 is 918268358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 853862819 - 2⁸ = 853862563 is a prime.

It is a super-2 number, since 2×853862819² = 1458163427341253522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853862839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312329 + ... + 315050.

It is an arithmetic number, because the mean of its divisors is an integer number (213622890).

Almost surely, 2^853862819 is an apocalyptic number.

853862819 is a deficient number, since it is larger than the sum of its proper divisors (628741).

853862819 is a wasteful number, since it uses less digits than its factorization.

853862819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628740.

The product of its digits is 829440, while the sum is 50.

The square root of 853862819 is about 29220.9311795500. The cubic root of 853862819 is about 948.7010202211.

The spelling of 853862819 in words is "eight hundred fifty-three million, eight hundred sixty-two thousand, eight hundred nineteen".