328185378839 has 2 divisors, whose sum is σ = 328185378840. Its totient is φ = 328185378838.

The previous prime is 328185378823. The next prime is 328185378889. The reversal of 328185378839 is 938873581823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328185378839 - 2⁴ = 328185378823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328185378889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164092689419 + 164092689420.

It is an arithmetic number, because the mean of its divisors is an integer number (164092689420).

Almost surely, 2^328185378839 is an apocalyptic number.

328185378839 is a deficient number, since it is larger than the sum of its proper divisors (1).

328185378839 is an equidigital number, since it uses as much as digits as its factorization.

328185378839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69672960, while the sum is 65.

The spelling of 328185378839 in words is "three hundred twenty-eight billion, one hundred eighty-five million, three hundred seventy-eight thousand, eight hundred thirty-nine".