2778437882 has 16 divisors (see below), whose sum is σ = 4621070304. Its totient is φ = 1242222000.

The previous prime is 2778437873. The next prime is 2778437897. The reversal of 2778437882 is 2887348772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033844 + ... + 1036527.

It is an arithmetic number, because the mean of its divisors is an integer number (288816894).

Almost surely, 2^2778437882 is an apocalyptic number.

2778437882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2778437882 is a deficient number, since it is larger than the sum of its proper divisors (1842632422).

2778437882 is a wasteful number, since it uses less digits than its factorization.

2778437882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070445.

The product of its digits is 8429568, while the sum is 56.

The square root of 2778437882 is about 52710.8895959839. The cubic root of 2778437882 is about 1405.8324507098.

The spelling of 2778437882 in words is "two billion, seven hundred seventy-eight million, four hundred thirty-seven thousand, eight hundred eighty-two".