1116169987 has 2 divisors, whose sum is σ = 1116169988. Its totient is φ = 1116169986.

The previous prime is 1116169961. The next prime is 1116170017. The reversal of 1116169987 is 7899616111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1116169987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1116169987.

It is not a weakly prime, because it can be changed into another prime (1116119987) 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 as a sum of consecutive naturals, namely, 558084993 + 558084994.

It is an arithmetic number, because the mean of its divisors is an integer number (558084994).

Almost surely, 2^1116169987 is an apocalyptic number.

1116169987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116169987 is an equidigital number, since it uses as much as digits as its factorization.

1116169987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 49.

The square root of 1116169987 is about 33409.1302939780. The cubic root of 1116169987 is about 1037.3136993981.

The spelling of 1116169987 in words is "one billion, one hundred sixteen million, one hundred sixty-nine thousand, nine hundred eighty-seven".