1115248813 has 16 divisors (see below), whose sum is σ = 1296858880. Its totient is φ = 939309696.

The previous prime is 1115248801. The next prime is 1115248819. The reversal of 1115248813 is 3188425111.

It is a cyclic number.

It is not a de Polignac number, because 1115248813 - 2²¹ = 1113151661 is a prime.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 137608 + ... + 145486.

It is an arithmetic number, because the mean of its divisors is an integer number (81053680).

Almost surely, 2^1115248813 is an apocalyptic number.

It is an amenable number.

1115248813 is a deficient number, since it is larger than the sum of its proper divisors (181610067).

1115248813 is an equidigital number, since it uses as much as digits as its factorization.

1115248813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236.

The product of its digits is 7680, while the sum is 34.

The square root of 1115248813 is about 33395.3411870578. The cubic root of 1115248813 is about 1037.0282561974.

The spelling of 1115248813 in words is "one billion, one hundred fifteen million, two hundred forty-eight thousand, eight hundred thirteen".