2778444044 has 6 divisors (see below), whose sum is σ = 4862277084. Its totient is φ = 1389222020.

The previous prime is 2778444029. The next prime is 2778444049. The reversal of 2778444044 is 4404448772.

It is a junction number, because it is equal to n+sod(n) for n = 2778443986 and 2778444004.

It is not an unprimeable number, because it can be changed into a prime (2778444049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347305502 + ... + 347305509.

It is an arithmetic number, because the mean of its divisors is an integer number (810379514).

Almost surely, 2^2778444044 is an apocalyptic number.

It is an amenable number.

2778444044 is a deficient number, since it is larger than the sum of its proper divisors (2083833040).

2778444044 is a wasteful number, since it uses less digits than its factorization.

2778444044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694611015 (or 694611013 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 44.

The square root of 2778444044 is about 52710.9480468716. The cubic root of 2778444044 is about 1405.8334899908.

The spelling of 2778444044 in words is "two billion, seven hundred seventy-eight million, four hundred forty-four thousand, forty-four".