2891331982 has 32 divisors (see below), whose sum is σ = 5415081984. Its totient is φ = 1124844000.

The previous prime is 2891331913. The next prime is 2891332009.

2891331982 is nontrivially palindromic in base 10.

2891331982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94563 + ... + 121345.

It is an arithmetic number, because the mean of its divisors is an integer number (169221312).

Almost surely, 2^2891331982 is an apocalyptic number.

2891331982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2891331982 is a deficient number, since it is larger than the sum of its proper divisors (2523750002).

2891331982 is a wasteful number, since it uses less digits than its factorization.

2891331982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27504.

The product of its digits is 186624, while the sum is 46.

The square root of 2891331982 is about 53771.1073161043. The cubic root of 2891331982 is about 1424.6209283278.

The spelling of 2891331982 in words is "two billion, eight hundred ninety-one million, three hundred thirty-one thousand, nine hundred eighty-two".