328194691243 has 2 divisors, whose sum is σ = 328194691244. Its totient is φ = 328194691242.

The previous prime is 328194691163. The next prime is 328194691249. The reversal of 328194691243 is 342196491823.

It is a strong prime.

It is an emirp because it is prime and its reverse (342196491823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328194691243 - 2²¹ = 328192594091 is a prime.

It is not a weakly prime, because it can be changed into another prime (328194691249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164097345621 + 164097345622.

It is an arithmetic number, because the mean of its divisors is an integer number (164097345622).

Almost surely, 2^328194691243 is an apocalyptic number.

328194691243 is a deficient number, since it is larger than the sum of its proper divisors (1).

328194691243 is an equidigital number, since it uses as much as digits as its factorization.

328194691243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 52.

The spelling of 328194691243 in words is "three hundred twenty-eight billion, one hundred ninety-four million, six hundred ninety-one thousand, two hundred forty-three".