1117288945 has 8 divisors (see below), whose sum is σ = 1386979560. Its totient is φ = 863009280.

The previous prime is 1117288937. The next prime is 1117288957. The reversal of 1117288945 is 5498827111.

It can be written as a sum of positive squares in 4 ways, for example, as 86044176 + 1031244769 = 9276^2 + 32113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1117288945 - 2³ = 1117288937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1117288895 and 1117288904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3852576 + ... + 3852865.

It is an arithmetic number, because the mean of its divisors is an integer number (173372445).

Almost surely, 2^1117288945 is an apocalyptic number.

It is an amenable number.

1117288945 is a deficient number, since it is larger than the sum of its proper divisors (269690615).

1117288945 is an equidigital number, since it uses as much as digits as its factorization.

1117288945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7705475.

The product of its digits is 161280, while the sum is 46.

The square root of 1117288945 is about 33425.8723895129. The cubic root of 1117288945 is about 1037.6602185430.

The spelling of 1117288945 in words is "one billion, one hundred seventeen million, two hundred eighty-eight thousand, nine hundred forty-five".