328161823 has 4 divisors (see below), whose sum is σ = 357994728. Its totient is φ = 298328920.

The previous prime is 328161781. The next prime is 328161839.

It is a happy number.

328161823 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 328161823 - 2⁹ = 328161311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328161893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14916436 + ... + 14916457.

It is an arithmetic number, because the mean of its divisors is an integer number (89498682).

Almost surely, 2^328161823 is an apocalyptic number.

328161823 is a deficient number, since it is larger than the sum of its proper divisors (29832905).

328161823 is a wasteful number, since it uses less digits than its factorization.

328161823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29832904.

The product of its digits is 13824, while the sum is 34.

The square root of 328161823 is about 18115.2373155860. The cubic root of 328161823 is about 689.7568442387.

The spelling of 328161823 in words is "three hundred twenty-eight million, one hundred sixty-one thousand, eight hundred twenty-three".