871338813 has 16 divisors (see below), whose sum is σ = 1171008000. Its totient is φ = 576298800.

The previous prime is 871338779. The next prime is 871338857. The reversal of 871338813 is 318833178.

It is not a de Polignac number, because 871338813 - 2⁶ = 871338749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871338883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224338 + ... + 228188.

It is an arithmetic number, because the mean of its divisors is an integer number (73188000).

Almost surely, 2^871338813 is an apocalyptic number.

It is an amenable number.

871338813 is a deficient number, since it is larger than the sum of its proper divisors (299669187).

871338813 is a wasteful number, since it uses less digits than its factorization.

871338813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432.

The product of its digits is 96768, while the sum is 42.

The square root of 871338813 is about 29518.4486889132. The cubic root of 871338813 is about 955.1297076275.

The spelling of 871338813 in words is "eight hundred seventy-one million, three hundred thirty-eight thousand, eight hundred thirteen".