2788881616 has 20 divisors (see below), whose sum is σ = 5529121312. Its totient is φ = 1362011616.

The previous prime is 2788881611. The next prime is 2788881647. The reversal of 2788881616 is 6161888872.

It is a happy number.

2788881616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788881611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026116 + ... + 2027491.

Almost surely, 2^2788881616 is an apocalyptic number.

It is an amenable number.

2788881616 is a deficient number, since it is larger than the sum of its proper divisors (2740239696).

2788881616 is a wasteful number, since it uses less digits than its factorization.

2788881616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053658 (or 4053652 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 55.

The square root of 2788881616 is about 52809.8628667032. The cubic root of 2788881616 is about 1407.5916865482.

The spelling of 2788881616 in words is "two billion, seven hundred eighty-eight million, eight hundred eighty-one thousand, six hundred sixteen".