2739287891 has 2 divisors, whose sum is σ = 2739287892. Its totient is φ = 2739287890.

The previous prime is 2739287839. The next prime is 2739287897. The reversal of 2739287891 is 1987829372.

2739287891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2739287891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2739287897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369643945 + 1369643946.

It is an arithmetic number, because the mean of its divisors is an integer number (1369643946).

Almost surely, 2^2739287891 is an apocalyptic number.

2739287891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2739287891 is an equidigital number, since it uses as much as digits as its factorization.

2739287891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 56.

The square root of 2739287891 is about 52338.2067996220. The cubic root of 2739287891 is about 1399.1981617599.

The spelling of 2739287891 in words is "two billion, seven hundred thirty-nine million, two hundred eighty-seven thousand, eight hundred ninety-one".