328109641 has 2 divisors, whose sum is σ = 328109642. Its totient is φ = 328109640.

The previous prime is 328109633. The next prime is 328109671. The reversal of 328109641 is 146901823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198810000 + 129299641 = 14100^2 + 11371^2 .

It is an emirp because it is prime and its reverse (146901823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328109641 - 2³ = 328109633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328109597 and 328109606.

It is not a weakly prime, because it can be changed into another prime (328109671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164054820 + 164054821.

It is an arithmetic number, because the mean of its divisors is an integer number (164054821).

Almost surely, 2^328109641 is an apocalyptic number.

It is an amenable number.

328109641 is a deficient number, since it is larger than the sum of its proper divisors (1).

328109641 is an equidigital number, since it uses as much as digits as its factorization.

328109641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 328109641 is about 18113.7969790986. The cubic root of 328109641 is about 689.7202821962.

The spelling of 328109641 in words is "three hundred twenty-eight million, one hundred nine thousand, six hundred forty-one".