1163681887 has 2 divisors, whose sum is σ = 1163681888. Its totient is φ = 1163681886.

The previous prime is 1163681879. The next prime is 1163681917. The reversal of 1163681887 is 7881863611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1163681887 - 2³ = 1163681879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1163681887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163681837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581840943 + 581840944.

It is an arithmetic number, because the mean of its divisors is an integer number (581840944).

Almost surely, 2^1163681887 is an apocalyptic number.

1163681887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163681887 is an equidigital number, since it uses as much as digits as its factorization.

1163681887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

The square root of 1163681887 is about 34112.7818713162. The cubic root of 1163681887 is about 1051.8280737873.

The spelling of 1163681887 in words is "one billion, one hundred sixty-three million, six hundred eighty-one thousand, eight hundred eighty-seven".