2731867881 has 16 divisors (see below), whose sum is σ = 3713086656. Its totient is φ = 1785982016.

The previous prime is 2731867877. The next prime is 2731867907. The reversal of 2731867881 is 1887681372.

It is a cyclic number.

It is not a de Polignac number, because 2731867881 - 2² = 2731867877 is a prime.

It is a super-2 number, since 2×2731867881² = 14926204238478860322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2731867811) 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 15 ways as a sum of consecutive naturals, for example, 487411 + ... + 492983.

It is an arithmetic number, because the mean of its divisors is an integer number (232067916).

Almost surely, 2^2731867881 is an apocalyptic number.

It is an amenable number.

2731867881 is a deficient number, since it is larger than the sum of its proper divisors (981218775).

2731867881 is a wasteful number, since it uses less digits than its factorization.

2731867881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712.

The product of its digits is 903168, while the sum is 51.

The square root of 2731867881 is about 52267.2735179481. The cubic root of 2731867881 is about 1397.9336661451.

The spelling of 2731867881 in words is "two billion, seven hundred thirty-one million, eight hundred sixty-seven thousand, eight hundred eighty-one".