2783279881 has 4 divisors (see below), whose sum is σ = 2783581200. Its totient is φ = 2782978564.

The previous prime is 2783279783. The next prime is 2783279903. The reversal of 2783279881 is 1889723872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2783279881 - 2¹⁵ = 2783247113 is a prime.

It is a super-2 number, since 2×2783279881² = 15493293791958748322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2783274881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136351 + ... + 155428.

It is an arithmetic number, because the mean of its divisors is an integer number (695895300).

Almost surely, 2^2783279881 is an apocalyptic number.

It is an amenable number.

2783279881 is a deficient number, since it is larger than the sum of its proper divisors (301319).

2783279881 is an equidigital number, since it uses as much as digits as its factorization.

2783279881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301318.

The product of its digits is 2709504, while the sum is 55.

The square root of 2783279881 is about 52756.7993816911. The cubic root of 2783279881 is about 1406.6486274263.

The spelling of 2783279881 in words is "two billion, seven hundred eighty-three million, two hundred seventy-nine thousand, eight hundred eighty-one".