2781284613 has 8 divisors (see below), whose sum is σ = 3720460128. Its totient is φ = 1848149424.

The previous prime is 2781284579. The next prime is 2781284641. The reversal of 2781284613 is 3164821872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2781284613 - 2²⁴ = 2764507397 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781284713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509006 + ... + 1510847.

It is an arithmetic number, because the mean of its divisors is an integer number (465057516).

Almost surely, 2^2781284613 is an apocalyptic number.

It is an amenable number.

2781284613 is a deficient number, since it is larger than the sum of its proper divisors (939175515).

2781284613 is a wasteful number, since it uses less digits than its factorization.

2781284613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020163.

The product of its digits is 129024, while the sum is 42.

The square root of 2781284613 is about 52737.8859360138. The cubic root of 2781284613 is about 1406.3124159477.

The spelling of 2781284613 in words is "two billion, seven hundred eighty-one million, two hundred eighty-four thousand, six hundred thirteen".