871834905841 has 9 divisors (see below), whose sum is σ = 884354465689. Its totient is φ = 859490180500.

The previous prime is 871834905839. The next prime is 871834905853. The reversal of 871834905841 is 148509438178.

The square root of 871834905841 is 933721.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 871834905841 - 2¹ = 871834905839 is a prime.

It is a super-2 number, since 2×871834905841² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871834905811) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66287616 + ... + 66300766.

Almost surely, 2^871834905841 is an apocalyptic number.

871834905841 is the 933721-st square number.

871834905841 is the 466861-st centered octagonal number.

It is an amenable number.

871834905841 is a deficient number, since it is larger than the sum of its proper divisors (12519559848).

871834905841 is an frugal number, since it uses more digits than its factorization.

871834905841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26444 (or 13222 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 871834905841 in words is "eight hundred seventy-one billion, eight hundred thirty-four million, nine hundred five thousand, eight hundred forty-one".