2778479216 has 10 divisors (see below), whose sum is σ = 5383303512. Its totient is φ = 1389239600.

The previous prime is 2778479149. The next prime is 2778479219. The reversal of 2778479216 is 6129748772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778479219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86827460 + ... + 86827491.

Almost surely, 2^2778479216 is an apocalyptic number.

It is an amenable number.

2778479216 is a deficient number, since it is larger than the sum of its proper divisors (2604824296).

2778479216 is a wasteful number, since it uses less digits than its factorization.

2778479216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173654959 (or 173654953 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 53.

The square root of 2778479216 is about 52711.2816766961. The cubic root of 2778479216 is about 1405.8394220599.

The spelling of 2778479216 in words is "two billion, seven hundred seventy-eight million, four hundred seventy-nine thousand, two hundred sixteen".