2781105613 has 32 divisors (see below), whose sum is σ = 3331101312. Its totient is φ = 2288563200.

The previous prime is 2781105589. The next prime is 2781105619. The reversal of 2781105613 is 3165011872.

It is a happy number.

2781105613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2781105613 - 2⁹ = 2781105101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781105619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2691745 + ... + 2692777.

It is an arithmetic number, because the mean of its divisors is an integer number (104096916).

Almost surely, 2^2781105613 is an apocalyptic number.

It is an amenable number.

2781105613 is a deficient number, since it is larger than the sum of its proper divisors (549995699).

2781105613 is a wasteful number, since it uses less digits than its factorization.

2781105613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 2781105613 is about 52736.1888365096. The cubic root of 2781105613 is about 1406.2822457975.

The spelling of 2781105613 in words is "two billion, seven hundred eighty-one million, one hundred five thousand, six hundred thirteen".