1328881031189 has 2 divisors, whose sum is σ = 1328881031190. Its totient is φ = 1328881031188.

The previous prime is 1328881031167. The next prime is 1328881031237. The reversal of 1328881031189 is 9811301888231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 766995863089 + 561885168100 = 875783^2 + 749590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328881031189 - 2²⁸ = 1328612595733 is a prime.

It is a Sophie Germain prime.

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 1328881031189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328881030189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664440515594 + 664440515595.

It is an arithmetic number, because the mean of its divisors is an integer number (664440515595).

Almost surely, 2^{1328881031189} is an apocalyptic number.

It is an amenable number.

1328881031189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328881031189 is an equidigital number, since it uses as much as digits as its factorization.

1328881031189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 53.

The spelling of 1328881031189 in words is "one trillion, three hundred twenty-eight billion, eight hundred eighty-one million, thirty-one thousand, one hundred eighty-nine".