328109643 has 8 divisors (see below), whose sum is σ = 486088400. Its totient is φ = 218739744.

The previous prime is 328109641. The next prime is 328109671. The reversal of 328109643 is 346901823.

328109643 is a `hidden beast` number, since 3 + 2 + 8 + 1 + 0 + 9 + 643 = 666.

It is not a de Polignac number, because 328109643 - 2¹ = 328109641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328109598 and 328109607.

It is not an unprimeable number, because it can be changed into a prime (328109641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6076078 + ... + 6076131.

It is an arithmetic number, because the mean of its divisors is an integer number (60761050).

Almost surely, 2^328109643 is an apocalyptic number.

328109643 is a deficient number, since it is larger than the sum of its proper divisors (157978757).

328109643 is a wasteful number, since it uses less digits than its factorization.

328109643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12152218 (or 12152212 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 328109643 is about 18113.7970343051. The cubic root of 328109643 is about 689.7202835976.

The spelling of 328109643 in words is "three hundred twenty-eight million, one hundred nine thousand, six hundred forty-three".