1968594328433 has 4 divisors (see below), whose sum is σ = 1968601900020. Its totient is φ = 1968586756848.

The previous prime is 1968594328429. The next prime is 1968594328451. The reversal of 1968594328433 is 3348234958691.

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

It can be written as a sum of positive squares in 2 ways, for example, as 433007429089 + 1535586899344 = 658033^2 + 1239188^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968594328433 - 2² = 1968594328429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1968594328433.

It is not an unprimeable number, because it can be changed into a prime (1968594328633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3381398 + ... + 3920591.

It is an arithmetic number, because the mean of its divisors is an integer number (492150475005).

Almost surely, 2^{1968594328433} is an apocalyptic number.

It is an amenable number.

1968594328433 is a deficient number, since it is larger than the sum of its proper divisors (7571587).

1968594328433 is an equidigital number, since it uses as much as digits as its factorization.

1968594328433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571586.

The product of its digits is 134369280, while the sum is 65.

The spelling of 1968594328433 in words is "one trillion, nine hundred sixty-eight billion, five hundred ninety-four million, three hundred twenty-eight thousand, four hundred thirty-three".