2778530679 has 12 divisors (see below), whose sum is σ = 4019925000. Its totient is φ = 1849357584.

The previous prime is 2778530647. The next prime is 2778530701. The reversal of 2778530679 is 9760358772.

It is not a de Polignac number, because 2778530679 - 2⁵ = 2778530647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778530179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243804 + ... + 254945.

It is an arithmetic number, because the mean of its divisors is an integer number (334993750).

Almost surely, 2^2778530679 is an apocalyptic number.

2778530679 is a deficient number, since it is larger than the sum of its proper divisors (1241394321).

2778530679 is a wasteful number, since it uses less digits than its factorization.

2778530679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499374 (or 499371 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The square root of 2778530679 is about 52711.7698336908. The cubic root of 2778530679 is about 1405.8481016603.

The spelling of 2778530679 in words is "two billion, seven hundred seventy-eight million, five hundred thirty thousand, six hundred seventy-nine".