328945041409 has 4 divisors (see below), whose sum is σ = 329426660016. Its totient is φ = 328463422804.

The previous prime is 328945041407. The next prime is 328945041421. The reversal of 328945041409 is 904140549823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 328945041409 - 2¹ = 328945041407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328945041407) 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 in 3 ways as a sum of consecutive naturals, for example, 240808279 + ... + 240809644.

It is an arithmetic number, because the mean of its divisors is an integer number (82356665004).

Almost surely, 2^328945041409 is an apocalyptic number.

It is an amenable number.

328945041409 is a deficient number, since it is larger than the sum of its proper divisors (481618607).

328945041409 is an equidigital number, since it uses as much as digits as its factorization.

328945041409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481618606.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 328945041409 in words is "three hundred twenty-eight billion, nine hundred forty-five million, forty-one thousand, four hundred nine".