2743139891 has 4 divisors (see below), whose sum is σ = 2810045784. Its totient is φ = 2676234000.

The previous prime is 2743139857. The next prime is 2743139939. The reversal of 2743139891 is 1989313472.

2743139891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2743139891 - 2²⁶ = 2676031027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2743139851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33452885 + ... + 33452966.

It is an arithmetic number, because the mean of its divisors is an integer number (702511446).

Almost surely, 2^2743139891 is an apocalyptic number.

2743139891 is a deficient number, since it is larger than the sum of its proper divisors (66905893).

2743139891 is an equidigital number, since it uses as much as digits as its factorization.

2743139891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66905892.

The product of its digits is 326592, while the sum is 47.

The square root of 2743139891 is about 52374.9929928396. The cubic root of 2743139891 is about 1399.8537076730.

The spelling of 2743139891 in words is "two billion, seven hundred forty-three million, one hundred thirty-nine thousand, eight hundred ninety-one".