2739386861 has 2 divisors, whose sum is σ = 2739386862. Its totient is φ = 2739386860.

The previous prime is 2739386821. The next prime is 2739386887. The reversal of 2739386861 is 1686839372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2625025225 + 114361636 = 51235^2 + 10694^2 .

It is a cyclic number.

It is not a de Polignac number, because 2739386861 - 2¹⁴ = 2739370477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2739386821) 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 as a sum of consecutive naturals, namely, 1369693430 + 1369693431.

It is an arithmetic number, because the mean of its divisors is an integer number (1369693431).

Almost surely, 2^2739386861 is an apocalyptic number.

It is an amenable number.

2739386861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2739386861 is an equidigital number, since it uses as much as digits as its factorization.

2739386861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The square root of 2739386861 is about 52339.1522762836. The cubic root of 2739386861 is about 1399.2150124866.

The spelling of 2739386861 in words is "two billion, seven hundred thirty-nine million, three hundred eighty-six thousand, eight hundred sixty-one".