2871782681 has 16 divisors (see below), whose sum is σ = 3247050240. Its totient is φ = 2525456640.

The previous prime is 2871782671. The next prime is 2871782689. The reversal of 2871782681 is 1862871782.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2871782681 is a prime.

It is a super-2 number, since 2×2871782681² = 16494271533783095522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2871782689) 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, 78671 + ... + 109236.

It is an arithmetic number, because the mean of its divisors is an integer number (202940640).

Almost surely, 2^2871782681 is an apocalyptic number.

It is an amenable number.

2871782681 is a deficient number, since it is larger than the sum of its proper divisors (375267559).

2871782681 is a wasteful number, since it uses less digits than its factorization.

2871782681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187984.

The product of its digits is 602112, while the sum is 50.

The square root of 2871782681 is about 53589.0164212780. The cubic root of 2871782681 is about 1421.4028787717.

The spelling of 2871782681 in words is "two billion, eight hundred seventy-one million, seven hundred eighty-two thousand, six hundred eighty-one".