1000000000987 has 4 divisors (see below), whose sum is σ = 1076923078000. Its totient is φ = 923076923976.

The previous prime is 1000000000949. The next prime is 1000000000997. The reversal of 1000000000987 is 7890000000001.

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 1000000000987 - 2¹¹ = 999999998939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000000000997) 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, 38461538487 + ... + 38461538512.

It is an arithmetic number, because the mean of its divisors is an integer number (269230769500).

Almost surely, 2^{1000000000987} is an apocalyptic number.

1000000000987 is a deficient number, since it is larger than the sum of its proper divisors (76923077013).

1000000000987 is an equidigital number, since it uses as much as digits as its factorization.

1000000000987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76923077012.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 1000000000987 its reverse (7890000000001), we get a palindrome (8890000000988).

The spelling of 1000000000987 in words is "one trillion, nine hundred eighty-seven", and thus it is an aban number.