2781474664 has 16 divisors (see below), whose sum is σ = 5326228800. Its totient is φ = 1361146992.

The previous prime is 2781474607. The next prime is 2781474671. The reversal of 2781474664 is 4664741872.

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, 3698394 + ... + 3699145.

It is an arithmetic number, because the mean of its divisors is an integer number (332889300).

Almost surely, 2^2781474664 is an apocalyptic number.

It is an amenable number.

2781474664 is a deficient number, since it is larger than the sum of its proper divisors (2544754136).

2781474664 is a wasteful number, since it uses less digits than its factorization.

2781474664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7397592 (or 7397588 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 49.

The square root of 2781474664 is about 52739.6877503081. The cubic root of 2781474664 is about 1406.3444473086.

The spelling of 2781474664 in words is "two billion, seven hundred eighty-one million, four hundred seventy-four thousand, six hundred sixty-four".