2881987705 has 4 divisors (see below), whose sum is σ = 3458385252. Its totient is φ = 2305590160.

The previous prime is 2881987681. The next prime is 2881987727. The reversal of 2881987705 is 5077891882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1082870649 + 1799117056 = 32907^2 + 42416^2 .

It is not a de Polignac number, because 2881987705 - 2²⁹ = 2345116793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288198766 + ... + 288198775.

It is an arithmetic number, because the mean of its divisors is an integer number (864596313).

Almost surely, 2^2881987705 is an apocalyptic number.

It is an amenable number.

2881987705 is a deficient number, since it is larger than the sum of its proper divisors (576397547).

2881987705 is an equidigital number, since it uses as much as digits as its factorization.

2881987705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576397546.

The product of its (nonzero) digits is 2257920, while the sum is 55.

The square root of 2881987705 is about 53684.1476136112. The cubic root of 2881987705 is about 1423.0845638656.

The spelling of 2881987705 in words is "two billion, eight hundred eighty-one million, nine hundred eighty-seven thousand, seven hundred five".