2871290881 has 4 divisors (see below), whose sum is σ = 2893209264. Its totient is φ = 2849372500.

The previous prime is 2871290857. The next prime is 2871290893. The reversal of 2871290881 is 1880921782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1880921782 = 2 ⋅940460891.

It is a cyclic number.

It is not a de Polignac number, because 2871290881 - 2¹⁹ = 2870766593 is a prime.

It is a super-2 number, since 2×2871290881² = 16488622646627512322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2871297881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10958995 + ... + 10959256.

It is an arithmetic number, because the mean of its divisors is an integer number (723302316).

Almost surely, 2^2871290881 is an apocalyptic number.

It is an amenable number.

2871290881 is a deficient number, since it is larger than the sum of its proper divisors (21918383).

2871290881 is a wasteful number, since it uses less digits than its factorization.

2871290881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21918382.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 2871290881 is about 53584.4275979505. The cubic root of 2871290881 is about 1421.3217345346.

The spelling of 2871290881 in words is "two billion, eight hundred seventy-one million, two hundred ninety thousand, eight hundred eighty-one".