320188613 has 2 divisors, whose sum is σ = 320188614. Its totient is φ = 320188612.

The previous prime is 320188597. The next prime is 320188643. The reversal of 320188613 is 316881023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209033764 + 111154849 = 14458^2 + 10543^2 .

It is a cyclic number.

It is not a de Polignac number, because 320188613 - 2⁴ = 320188597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320188613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320188643) 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, 160094306 + 160094307.

It is an arithmetic number, because the mean of its divisors is an integer number (160094307).

Almost surely, 2^320188613 is an apocalyptic number.

It is an amenable number.

320188613 is a deficient number, since it is larger than the sum of its proper divisors (1).

320188613 is an equidigital number, since it uses as much as digits as its factorization.

320188613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 320188613 is about 17893.8149370111. The cubic root of 320188613 is about 684.1247371487.

The spelling of 320188613 in words is "three hundred twenty million, one hundred eighty-eight thousand, six hundred thirteen".