2781641284 has 12 divisors (see below), whose sum is σ = 5024900608. Its totient is φ = 1345955400.

The previous prime is 2781641251. The next prime is 2781641327. The reversal of 2781641284 is 4821461872.

It is a self number, because there is not a number n which added to its sum of digits gives 2781641284.

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, 11216172 + ... + 11216419.

Almost surely, 2^2781641284 is an apocalyptic number.

It is an amenable number.

2781641284 is a deficient number, since it is larger than the sum of its proper divisors (2243259324).

2781641284 is a wasteful number, since it uses less digits than its factorization.

2781641284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22432626 (or 22432624 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 2781641284 is about 52741.2673719546. The cubic root of 2781641284 is about 1406.3725283880.

The spelling of 2781641284 in words is "two billion, seven hundred eighty-one million, six hundred forty-one thousand, two hundred eighty-four".