2740721437 has 2 divisors, whose sum is σ = 2740721438. Its totient is φ = 2740721436.

The previous prime is 2740721413. The next prime is 2740721471. The reversal of 2740721437 is 7341270472.

2740721437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1508079556 + 1232641881 = 38834^2 + 35109^2 .

It is a cyclic number.

It is not a de Polignac number, because 2740721437 - 2⁷ = 2740721309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2740721396 and 2740721405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2740721237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370360718 + 1370360719.

It is an arithmetic number, because the mean of its divisors is an integer number (1370360719).

Almost surely, 2^2740721437 is an apocalyptic number.

It is an amenable number.

2740721437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740721437 is an equidigital number, since it uses as much as digits as its factorization.

2740721437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 2740721437 is about 52351.9000323770. The cubic root of 2740721437 is about 1399.4421990438.

The spelling of 2740721437 in words is "two billion, seven hundred forty million, seven hundred twenty-one thousand, four hundred thirty-seven".