2784781923 has 32 divisors (see below), whose sum is σ = 4637921280. Its totient is φ = 1443929760.

The previous prime is 2784781907. The next prime is 2784781933. The reversal of 2784781923 is 3291874872.

It is not a de Polignac number, because 2784781923 - 2⁴ = 2784781907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2784781933) 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, 115338 + ... + 137376.

It is an arithmetic number, because the mean of its divisors is an integer number (144935040).

Almost surely, 2^2784781923 is an apocalyptic number.

2784781923 is a deficient number, since it is larger than the sum of its proper divisors (1853139357).

2784781923 is a wasteful number, since it uses less digits than its factorization.

2784781923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607.

The product of its digits is 1354752, while the sum is 51.

The square root of 2784781923 is about 52771.0329915949. The cubic root of 2784781923 is about 1406.9016221477.

The spelling of 2784781923 in words is "two billion, seven hundred eighty-four million, seven hundred eighty-one thousand, nine hundred twenty-three".