871953868 has 12 divisors (see below), whose sum is σ = 1615679352. Its totient is φ = 410331200.

The previous prime is 871953857. The next prime is 871953869. The reversal of 871953868 is 868359178.

It is a super-2 number, since 2×871953868² = 1520607095840322848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (871953869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411358 + ... + 6411493.

It is an arithmetic number, because the mean of its divisors is an integer number (134639946).

Almost surely, 2^871953868 is an apocalyptic number.

It is an amenable number.

871953868 is a deficient number, since it is larger than the sum of its proper divisors (743725484).

871953868 is a wasteful number, since it uses less digits than its factorization.

871953868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12822872 (or 12822870 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The square root of 871953868 is about 29528.8649968129. The cubic root of 871953868 is about 955.3543883618.

The spelling of 871953868 in words is "eight hundred seventy-one million, nine hundred fifty-three thousand, eight hundred sixty-eight".