1189327528481 has 2 divisors, whose sum is σ = 1189327528482. Its totient is φ = 1189327528480.

The previous prime is 1189327528453. The next prime is 1189327528507. The reversal of 1189327528481 is 1848257239811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 860070760000 + 329256768481 = 927400^2 + 573809^2 .

It is an emirp because it is prime and its reverse (1848257239811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1189327528481 - 2¹⁰ = 1189327527457 is a prime.

It is a super-2 number, since 2×1189327528481² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1189327528481.

It is not a weakly prime, because it can be changed into another prime (1189327548481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594663764240 + 594663764241.

It is an arithmetic number, because the mean of its divisors is an integer number (594663764241).

Almost surely, 2^{1189327528481} is an apocalyptic number.

It is an amenable number.

1189327528481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189327528481 is an equidigital number, since it uses as much as digits as its factorization.

1189327528481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 59.

The spelling of 1189327528481 in words is "one trillion, one hundred eighty-nine billion, three hundred twenty-seven million, five hundred twenty-eight thousand, four hundred eighty-one".