2781642383 has 16 divisors (see below), whose sum is σ = 3022668096. Its totient is φ = 2544549120.

The previous prime is 2781642371. The next prime is 2781642397. The reversal of 2781642383 is 3832461872.

It is a cyclic number.

It is not a de Polignac number, because 2781642383 - 2²⁶ = 2714533519 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781642343) 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 15 ways as a sum of consecutive naturals, for example, 1518278 + ... + 1520108.

It is an arithmetic number, because the mean of its divisors is an integer number (188916756).

Almost surely, 2^2781642383 is an apocalyptic number.

2781642383 is a deficient number, since it is larger than the sum of its proper divisors (241025713).

2781642383 is a wasteful number, since it uses less digits than its factorization.

2781642383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834.

The product of its digits is 387072, while the sum is 44.

The square root of 2781642383 is about 52741.2777907400. The cubic root of 2781642383 is about 1406.3727136028.

The spelling of 2781642383 in words is "two billion, seven hundred eighty-one million, six hundred forty-two thousand, three hundred eighty-three".