2796942781 has 16 divisors (see below), whose sum is σ = 2887315200. Its totient is φ = 2708222400.

The previous prime is 2796942779. The next prime is 2796942821. The reversal of 2796942781 is 1872496972.

It is a cyclic number.

It is not a de Polignac number, because 2796942781 - 2¹ = 2796942779 is a prime.

It is a super-2 number, since 2×2796942781² = 15645777840376027922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2796942721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2220930 + ... + 2222188.

It is an arithmetic number, because the mean of its divisors is an integer number (180457200).

Almost surely, 2^2796942781 is an apocalyptic number.

It is an amenable number.

2796942781 is a deficient number, since it is larger than the sum of its proper divisors (90372419).

2796942781 is a wasteful number, since it uses less digits than its factorization.

2796942781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860.

The product of its digits is 3048192, while the sum is 55.

The square root of 2796942781 is about 52886.1303273363. The cubic root of 2796942781 is about 1408.9465801798.

The spelling of 2796942781 in words is "two billion, seven hundred ninety-six million, nine hundred forty-two thousand, seven hundred eighty-one".