1352721613 has 2 divisors, whose sum is σ = 1352721614. Its totient is φ = 1352721612.

The previous prime is 1352721581. The next prime is 1352721641. The reversal of 1352721613 is 3161272531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766016329 + 586705284 = 27677^2 + 24222^2 .

It is an emirp because it is prime and its reverse (3161272531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1352721613 - 2⁵ = 1352721581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1352721113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676360806 + 676360807.

It is an arithmetic number, because the mean of its divisors is an integer number (676360807).

Almost surely, 2^1352721613 is an apocalyptic number.

It is an amenable number.

1352721613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1352721613 is an equidigital number, since it uses as much as digits as its factorization.

1352721613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 1352721613 is about 36779.3639558924. The cubic root of 1352721613 is about 1105.9516553484.

The spelling of 1352721613 in words is "one billion, three hundred fifty-two million, seven hundred twenty-one thousand, six hundred thirteen".