1328375089 has 2 divisors, whose sum is σ = 1328375090. Its totient is φ = 1328375088.

The previous prime is 1328375057. The next prime is 1328375099. The reversal of 1328375089 is 9805738231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889053489 + 439321600 = 29817^2 + 20960^2 .

It is an emirp because it is prime and its reverse (9805738231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1328375089 - 2⁵ = 1328375057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328375039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664187544 + 664187545.

It is an arithmetic number, because the mean of its divisors is an integer number (664187545).

Almost surely, 2^1328375089 is an apocalyptic number.

It is an amenable number.

1328375089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328375089 is an equidigital number, since it uses as much as digits as its factorization.

1328375089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 1328375089 is about 36446.8803740457. The cubic root of 1328375089 is about 1099.2764081399.

The spelling of 1328375089 in words is "one billion, three hundred twenty-eight million, three hundred seventy-five thousand, eighty-nine".