2780677916 has 12 divisors (see below), whose sum is σ = 4867105488. Its totient is φ = 1390076352.

The previous prime is 2780677883. The next prime is 2780677927. The reversal of 2780677916 is 6197760872.

It is a congruent number.

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, 40781 + ... + 84996.

It is an arithmetic number, because the mean of its divisors is an integer number (405592124).

Almost surely, 2^2780677916 is an apocalyptic number.

It is an amenable number.

2780677916 is a deficient number, since it is larger than the sum of its proper divisors (2086427572).

2780677916 is a wasteful number, since it uses less digits than its factorization.

2780677916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131308 (or 131306 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 2780677916 is about 52732.1336188856. The cubic root of 2780677916 is about 1406.2101529424.

The spelling of 2780677916 in words is "two billion, seven hundred eighty million, six hundred seventy-seven thousand, nine hundred sixteen".