1168965987 has 8 divisors (see below), whose sum is σ = 1781281536. Its totient is φ = 667980552.

The previous prime is 1168965983. The next prime is 1168965989. The reversal of 1168965987 is 7895698611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1168965987 - 2² = 1168965983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1168965987.

It is not an unprimeable number, because it can be changed into a prime (1168965983) 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 7 ways as a sum of consecutive naturals, for example, 27832503 + ... + 27832544.

It is an arithmetic number, because the mean of its divisors is an integer number (222660192).

Almost surely, 2^1168965987 is an apocalyptic number.

1168965987 is a deficient number, since it is larger than the sum of its proper divisors (612315549).

1168965987 is an equidigital number, since it uses as much as digits as its factorization.

1168965987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55665057.

The product of its digits is 6531840, while the sum is 60.

The square root of 1168965987 is about 34190.1445887554. The cubic root of 1168965987 is about 1053.4177331048.

The spelling of 1168965987 in words is "one billion, one hundred sixty-eight million, nine hundred sixty-five thousand, nine hundred eighty-seven".