849843852858 has 448 divisors, whose sum is σ = 2717218006272. Its totient is φ = 191767357440.

The previous prime is 849843852787. The next prime is 849843852883. The reversal of 849843852858 is 858258348948.

It is a happy number.

849843852858 is a `hidden beast` number, since 8 + 4 + 9 + 8 + 43 + 8 + 528 + 58 = 666.

849843852858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 24793660 + ... + 24827912.

It is an arithmetic number, because the mean of its divisors is an integer number (6065218764).

Almost surely, 2^849843852858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849843852858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1358609003136).

849843852858 is an abundant number, since it is smaller than the sum of its proper divisors (1867374153414).

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

849843852858 is a wasteful number, since it uses less digits than its factorization.

849843852858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34321 (or 34306 counting only the distinct ones).

The product of its digits is 707788800, while the sum is 72.

The spelling of 849843852858 in words is "eight hundred forty-nine billion, eight hundred forty-three million, eight hundred fifty-two thousand, eight hundred fifty-eight".