2681181844 has 12 divisors (see below), whose sum is σ = 5118619968. Its totient is φ = 1218719000.

The previous prime is 2681181823. The next prime is 2681181859. The reversal of 2681181844 is 4481811862.

It is a self number, because there is not a number n which added to its sum of digits gives 2681181844.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30467932 + ... + 30468019.

It is an arithmetic number, because the mean of its divisors is an integer number (426551664).

Almost surely, 2^2681181844 is an apocalyptic number.

It is an amenable number.

2681181844 is a deficient number, since it is larger than the sum of its proper divisors (2437438124).

2681181844 is a wasteful number, since it uses less digits than its factorization.

2681181844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60935966 (or 60935964 counting only the distinct ones).

The product of its digits is 98304, while the sum is 43.

The square root of 2681181844 is about 51780.1298183000. The cubic root of 2681181844 is about 1389.2340627776.

It can be divided in two parts, 26811818 and 44, that added together give a palindrome (26811862).

The spelling of 2681181844 in words is "two billion, six hundred eighty-one million, one hundred eighty-one thousand, eight hundred forty-four".