2778351136 has 24 divisors (see below), whose sum is σ = 5967141264. Its totient is φ = 1262886720.

The previous prime is 2778351077. The next prime is 2778351143. The reversal of 2778351136 is 6311538772.

It is a junction number, because it is equal to n+sod(n) for n = 2778351092 and 2778351101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3946170 + ... + 3946873.

It is an arithmetic number, because the mean of its divisors is an integer number (248630886).

Almost surely, 2^2778351136 is an apocalyptic number.

It is an amenable number.

2778351136 is an abundant number, since it is smaller than the sum of its proper divisors (3188790128).

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

2778351136 is a wasteful number, since it uses less digits than its factorization.

2778351136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893064 (or 7893056 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 2778351136 is about 52710.0667425113. The cubic root of 2778351136 is about 1405.8178199932.

The spelling of 2778351136 in words is "two billion, seven hundred seventy-eight million, three hundred fifty-one thousand, one hundred thirty-six".