328445237789 has 2 divisors, whose sum is σ = 328445237790. Its totient is φ = 328445237788.

The previous prime is 328445237779. The next prime is 328445237837. The reversal of 328445237789 is 987732544823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190678068889 + 137767168900 = 436667^2 + 371170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328445237789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328445237779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164222618894 + 164222618895.

It is an arithmetic number, because the mean of its divisors is an integer number (164222618895).

Almost surely, 2^328445237789 is an apocalyptic number.

It is an amenable number.

328445237789 is a deficient number, since it is larger than the sum of its proper divisors (1).

328445237789 is an equidigital number, since it uses as much as digits as its factorization.

328445237789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 62.

The spelling of 328445237789 in words is "three hundred twenty-eight billion, four hundred forty-five million, two hundred thirty-seven thousand, seven hundred eighty-nine".