1116119891 has 2 divisors, whose sum is σ = 1116119892. Its totient is φ = 1116119890.

The previous prime is 1116119881. The next prime is 1116119899. The reversal of 1116119891 is 1989116111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1989116111) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1686119111 and 1119116861.

It is a cyclic number.

It is not a de Polignac number, because 1116119891 - 2¹⁴ = 1116103507 is a prime.

It is a super-2 number, since 2×1116119891² = 2491447222171703762, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1116119899) 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, 558059945 + 558059946.

It is an arithmetic number, because the mean of its divisors is an integer number (558059946).

Almost surely, 2^1116119891 is an apocalyptic number.

1116119891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116119891 is an equidigital number, since it uses as much as digits as its factorization.

1116119891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 38.

The square root of 1116119891 is about 33408.3805503948. The cubic root of 1116119891 is about 1037.2981802432.

The spelling of 1116119891 in words is "one billion, one hundred sixteen million, one hundred nineteen thousand, eight hundred ninety-one".