1158186536987 has 4 divisors (see below), whose sum is σ = 1161242438520. Its totient is φ = 1155130635456.

The previous prime is 1158186536977. The next prime is 1158186537017. The reversal of 1158186536987 is 7896356818511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1158186536987 - 2¹⁰ = 1158186535963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158186536977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527950198 + ... + 1527950955.

It is an arithmetic number, because the mean of its divisors is an integer number (290310609630).

Almost surely, 2^{1158186536987} is an apocalyptic number.

1158186536987 is a deficient number, since it is larger than the sum of its proper divisors (3055901533).

1158186536987 is an equidigital number, since it uses as much as digits as its factorization.

1158186536987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055901532.

The product of its digits is 87091200, while the sum is 68.

The spelling of 1158186536987 in words is "one trillion, one hundred fifty-eight billion, one hundred eighty-six million, five hundred thirty-six thousand, nine hundred eighty-seven".