853818 has 32 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 235200.

The previous prime is 853813. The next prime is 853819. The reversal of 853818 is 818358.

853818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853813) by changing a digit.

853818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2⁸⁵³⁸¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010880).

853818 is an abundant number, since it is smaller than the sum of its proper divisors (1167942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

853818 is a wasteful number, since it uses less digits than its factorization.

853818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its digits is 7680, while the sum is 33.

The square root of 853818 is about 924.0227269932. The cubic root of 853818 is about 94.8684420921.

The spelling of 853818 in words is "eight hundred fifty-three thousand, eight hundred eighteen".