1159736987 has 4 divisors (see below), whose sum is σ = 1159863720. Its totient is φ = 1159610256.

The previous prime is 1159736983. The next prime is 1159737023. The reversal of 1159736987 is 7896379511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7896379511 = 683 ⋅11561317.

It is a cyclic number.

It is not a de Polignac number, because 1159736987 - 2² = 1159736983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159736983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48473 + ... + 68330.

It is an arithmetic number, because the mean of its divisors is an integer number (289965930).

Almost surely, 2^1159736987 is an apocalyptic number.

1159736987 is a deficient number, since it is larger than the sum of its proper divisors (126733).

1159736987 is an equidigital number, since it uses as much as digits as its factorization.

1159736987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126732.

The product of its digits is 2857680, while the sum is 56.

The square root of 1159736987 is about 34054.9113491725. The cubic root of 1159736987 is about 1050.6381568922.

It can be divided in two parts, 11597 and 36987, that added together give a palindrome (48584).

The spelling of 1159736987 in words is "one billion, one hundred fifty-nine million, seven hundred thirty-six thousand, nine hundred eighty-seven".