2778479630 has 16 divisors (see below), whose sum is σ = 5264488080. Its totient is φ = 1052897472.

The previous prime is 2778479629. The next prime is 2778479657. The reversal of 2778479630 is 369748772.

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, 7311599 + ... + 7311978.

It is an arithmetic number, because the mean of its divisors is an integer number (329030505).

Almost surely, 2^2778479630 is an apocalyptic number.

2778479630 is a deficient number, since it is larger than the sum of its proper divisors (2486008450).

2778479630 is a wasteful number, since it uses less digits than its factorization.

2778479630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14623603.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The square root of 2778479630 is about 52711.2856037490. The cubic root of 2778479630 is about 1405.8394918844.

The spelling of 2778479630 in words is "two billion, seven hundred seventy-eight million, four hundred seventy-nine thousand, six hundred thirty".