1115745187 has 2 divisors, whose sum is σ = 1115745188. Its totient is φ = 1115745186.

The previous prime is 1115745167. The next prime is 1115745199. The reversal of 1115745187 is 7815475111.

It is a strong prime.

It is an emirp because it is prime and its reverse (7815475111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115745187 - 2¹⁵ = 1115712419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115745167) 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, 557872593 + 557872594.

It is an arithmetic number, because the mean of its divisors is an integer number (557872594).

Almost surely, 2^1115745187 is an apocalyptic number.

1115745187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115745187 is an equidigital number, since it uses as much as digits as its factorization.

1115745187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 40.

The square root of 1115745187 is about 33402.7721454373. The cubic root of 1115745187 is about 1037.1820865976.

The spelling of 1115745187 in words is "one billion, one hundred fifteen million, seven hundred forty-five thousand, one hundred eighty-seven".