1328411789 has 2 divisors, whose sum is σ = 1328411790. Its totient is φ = 1328411788.

The previous prime is 1328411761. The next prime is 1328411803. The reversal of 1328411789 is 9871148231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243126564 + 85285225 = 35258^2 + 9235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328411789 is a prime.

It is a super-3 number, since 3×1328411789³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328411719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664205894 + 664205895.

It is an arithmetic number, because the mean of its divisors is an integer number (664205895).

Almost surely, 2^1328411789 is an apocalyptic number.

It is an amenable number.

1328411789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328411789 is an equidigital number, since it uses as much as digits as its factorization.

1328411789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 44.

The square root of 1328411789 is about 36447.3838430140. The cubic root of 1328411789 is about 1099.2865315538.

The spelling of 1328411789 in words is "one billion, three hundred twenty-eight million, four hundred eleven thousand, seven hundred eighty-nine".