1188583947641 has 2 divisors, whose sum is σ = 1188583947642. Its totient is φ = 1188583947640.

The previous prime is 1188583947637. The next prime is 1188583947647. The reversal of 1188583947641 is 1467493858811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 897869953600 + 290713994041 = 947560^2 + 539179^2 .

It is an emirp because it is prime and its reverse (1467493858811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1188583947641 - 2² = 1188583947637 is a prime.

It is not a weakly prime, because it can be changed into another prime (1188583947647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594291973820 + 594291973821.

It is an arithmetic number, because the mean of its divisors is an integer number (594291973821).

Almost surely, 2^{1188583947641} is an apocalyptic number.

It is an amenable number.

1188583947641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188583947641 is an equidigital number, since it uses as much as digits as its factorization.

1188583947641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46448640, while the sum is 65.

The spelling of 1188583947641 in words is "one trillion, one hundred eighty-eight billion, five hundred eighty-three million, nine hundred forty-seven thousand, six hundred forty-one".