1191318058729 has 2 divisors, whose sum is σ = 1191318058730. Its totient is φ = 1191318058728.

The previous prime is 1191318058703. The next prime is 1191318058753. The reversal of 1191318058729 is 9278508131911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 778417998400 + 412900060329 = 882280^2 + 642573^2 .

It is an emirp because it is prime and its reverse (9278508131911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1191318058729 - 2¹³ = 1191318050537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1191318058729.

It is not a weakly prime, because it can be changed into another prime (1191318058789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595659029364 + 595659029365.

It is an arithmetic number, because the mean of its divisors is an integer number (595659029365).

Almost surely, 2^{1191318058729} is an apocalyptic number.

It is an amenable number.

1191318058729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191318058729 is an equidigital number, since it uses as much as digits as its factorization.

1191318058729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 55.

The spelling of 1191318058729 in words is "one trillion, one hundred ninety-one billion, three hundred eighteen million, fifty-eight thousand, seven hundred twenty-nine".