2781871292 has 12 divisors (see below), whose sum is σ = 4872150360. Its totient is φ = 1389828336.

The previous prime is 2781871271. The next prime is 2781871327. The reversal of 2781871292 is 2921781872.

It is a congruent 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, 271163 + ... + 281234.

It is an arithmetic number, because the mean of its divisors is an integer number (406012530).

Almost surely, 2^2781871292 is an apocalyptic number.

It is an amenable number.

2781871292 is a deficient number, since it is larger than the sum of its proper divisors (2090279068).

2781871292 is a wasteful number, since it uses less digits than its factorization.

2781871292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553660 (or 553658 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 2781871292 is about 52743.4478584781. The cubic root of 2781871292 is about 1406.4112906371.

The spelling of 2781871292 in words is "two billion, seven hundred eighty-one million, eight hundred seventy-one thousand, two hundred ninety-two".