2735721613 has 2 divisors, whose sum is σ = 2735721614. Its totient is φ = 2735721612.

The previous prime is 2735721589. The next prime is 2735721649. The reversal of 2735721613 is 3161275372.

2735721613 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., 2720456964 + 15264649 = 52158^2 + 3907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2735721613 - 2⁵ = 2735721581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2735721013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1367860806 + 1367860807.

It is an arithmetic number, because the mean of its divisors is an integer number (1367860807).

Almost surely, 2^2735721613 is an apocalyptic number.

It is an amenable number.

2735721613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2735721613 is an equidigital number, since it uses as much as digits as its factorization.

2735721613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 2735721613 is about 52304.1261565472. The cubic root of 2735721613 is about 1398.5906928543.

Adding to 2735721613 its reverse (3161275372), we get a palindrome (5896996985).

The spelling of 2735721613 in words is "two billion, seven hundred thirty-five million, seven hundred twenty-one thousand, six hundred thirteen".