1115248811 has 4 divisors (see below), whose sum is σ = 1118191800. Its totient is φ = 1112305824.

The previous prime is 1115248801. The next prime is 1115248819. The reversal of 1115248811 is 1188425111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1115248811 - 2⁶ = 1115248747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115248819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470926 + ... + 1471683.

It is an arithmetic number, because the mean of its divisors is an integer number (279547950).

Almost surely, 2^1115248811 is an apocalyptic number.

1115248811 is a deficient number, since it is larger than the sum of its proper divisors (2942989).

1115248811 is an equidigital number, since it uses as much as digits as its factorization.

1115248811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942988.

The product of its digits is 2560, while the sum is 32.

The square root of 1115248811 is about 33395.3411571135. The cubic root of 1115248811 is about 1037.0282555775.

The spelling of 1115248811 in words is "one billion, one hundred fifteen million, two hundred forty-eight thousand, eight hundred eleven".