1115287867 has 2 divisors, whose sum is σ = 1115287868. Its totient is φ = 1115287866.

The previous prime is 1115287853. The next prime is 1115287883. The reversal of 1115287867 is 7687825111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115287867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115287847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557643933 + 557643934.

It is an arithmetic number, because the mean of its divisors is an integer number (557643934).

Almost surely, 2^1115287867 is an apocalyptic number.

1115287867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115287867 is an equidigital number, since it uses as much as digits as its factorization.

1115287867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 46.

The square root of 1115287867 is about 33395.9259042177. The cubic root of 1115287867 is about 1037.0403610085.

The spelling of 1115287867 in words is "one billion, one hundred fifteen million, two hundred eighty-seven thousand, eight hundred sixty-seven".