2782273387 has 4 divisors (see below), whose sum is σ = 2782380376. Its totient is φ = 2782166400.

The previous prime is 2782273357. The next prime is 2782273399. The reversal of 2782273387 is 7833722872.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2782273387 - 2¹⁵ = 2782240619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2782273387.

It is not an unprimeable number, because it can be changed into a prime (2782273357) 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, 13387 + ... + 75787.

It is an arithmetic number, because the mean of its divisors is an integer number (695595094).

Almost surely, 2^2782273387 is an apocalyptic number.

2782273387 is a deficient number, since it is larger than the sum of its proper divisors (106989).

2782273387 is an equidigital number, since it uses as much as digits as its factorization.

2782273387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106988.

The product of its digits is 1580544, while the sum is 49.

The square root of 2782273387 is about 52747.2595212301. The cubic root of 2782273387 is about 1406.4790488286.

The spelling of 2782273387 in words is "two billion, seven hundred eighty-two million, two hundred seventy-three thousand, three hundred eighty-seven".