2778732650 has 24 divisors (see below), whose sum is σ = 5177942400. Its totient is φ = 1109450160.

The previous prime is 2778732631. The next prime is 2778732679. The reversal of 2778732650 is 562378772.

It is a junction number, because it is equal to n+sod(n) for n = 2778732595 and 2778732604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23450 + ... + 78149.

It is an arithmetic number, because the mean of its divisors is an integer number (215747600).

Almost surely, 2^2778732650 is an apocalyptic number.

2778732650 is a deficient number, since it is larger than the sum of its proper divisors (2399209750).

2778732650 is a wasteful number, since it uses less digits than its factorization.

2778732650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102158 (or 102153 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 47.

The square root of 2778732650 is about 52713.6856044045. The cubic root of 2778732650 is about 1405.8821644678.

The spelling of 2778732650 in words is "two billion, seven hundred seventy-eight million, seven hundred thirty-two thousand, six hundred fifty".