2778566830 has 16 divisors (see below), whose sum is σ = 5386145184. Its totient is φ = 1025932320.

The previous prime is 2778566801. The next prime is 2778566867. The reversal of 2778566830 is 386658772.

2778566830 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10686666 + ... + 10686925.

It is an arithmetic number, because the mean of its divisors is an integer number (336634074).

Almost surely, 2^2778566830 is an apocalyptic number.

2778566830 is a deficient number, since it is larger than the sum of its proper divisors (2607578354).

2778566830 is a wasteful number, since it uses less digits than its factorization.

2778566830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21373611.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The square root of 2778566830 is about 52712.1127446055. The cubic root of 2778566830 is about 1405.8541987190.

The spelling of 2778566830 in words is "two billion, seven hundred seventy-eight million, five hundred sixty-six thousand, eight hundred thirty".