328947613 has 2 divisors, whose sum is σ = 328947614. Its totient is φ = 328947612.

The previous prime is 328947601. The next prime is 328947623. The reversal of 328947613 is 316749823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166461604 + 162486009 = 12902^2 + 12747^2 .

It is a cyclic number.

It is not a de Polignac number, because 328947613 - 2¹³ = 328939421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328947613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328947623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164473806 + 164473807.

It is an arithmetic number, because the mean of its divisors is an integer number (164473807).

Almost surely, 2^328947613 is an apocalyptic number.

It is an amenable number.

328947613 is a deficient number, since it is larger than the sum of its proper divisors (1).

328947613 is an equidigital number, since it uses as much as digits as its factorization.

328947613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 328947613 is about 18136.9129953253. The cubic root of 328947613 is about 690.3069508773.

The spelling of 328947613 in words is "three hundred twenty-eight million, nine hundred forty-seven thousand, six hundred thirteen".