2778380466 has 16 divisors (see below), whose sum is σ = 5674990464. Its totient is φ = 906421904.

The previous prime is 2778380459. The next prime is 2778380491. The reversal of 2778380466 is 6640838772.

2778380466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4925925 + ... + 4926488.

It is an arithmetic number, because the mean of its divisors is an integer number (354686904).

Almost surely, 2^2778380466 is an apocalyptic number.

2778380466 is an abundant number, since it is smaller than the sum of its proper divisors (2896609998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2778380466 is a wasteful number, since it uses less digits than its factorization.

2778380466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9852465.

The product of its (nonzero) digits is 2709504, while the sum is 51.

The square root of 2778380466 is about 52710.3449618763. The cubic root of 2778380466 is about 1405.8227668712.

The spelling of 2778380466 in words is "two billion, seven hundred seventy-eight million, three hundred eighty thousand, four hundred sixty-six".