871852818 has 16 divisors (see below), whose sum is σ = 1744507296. Its totient is φ = 290484000.

The previous prime is 871852801. The next prime is 871852831. The reversal of 871852818 is 818258178.

It is a super-2 number, since 2×871852818² = 1520254672509082248, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18771 + ... + 45782.

It is an arithmetic number, because the mean of its divisors is an integer number (109031706).

Almost surely, 2^871852818 is an apocalyptic number.

871852818 is an abundant number, since it is smaller than the sum of its proper divisors (872654478).

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

871852818 is a wasteful number, since it uses less digits than its factorization.

871852818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66809.

The product of its digits is 286720, while the sum is 48.

The square root of 871852818 is about 29527.1539095796. The cubic root of 871852818 is about 955.3174818640.

The spelling of 871852818 in words is "eight hundred seventy-one million, eight hundred fifty-two thousand, eight hundred eighteen".