2781313516 has 12 divisors (see below), whose sum is σ = 4869063360. Its totient is φ = 1390152560.

The previous prime is 2781313463. The next prime is 2781313517. The reversal of 2781313516 is 6153131872.

It is not an unprimeable number, because it can be changed into a prime (2781313517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113500 + ... + 135811.

It is an arithmetic number, because the mean of its divisors is an integer number (405755280).

Almost surely, 2^2781313516 is an apocalyptic number.

It is an amenable number.

2781313516 is a deficient number, since it is larger than the sum of its proper divisors (2087749844).

2781313516 is a wasteful number, since it uses less digits than its factorization.

2781313516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252104 (or 252102 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 2781313516 is about 52738.1599603172. The cubic root of 2781313516 is about 1406.3172873785.

The spelling of 2781313516 in words is "two billion, seven hundred eighty-one million, three hundred thirteen thousand, five hundred sixteen".