1115599745 has 16 divisors (see below), whose sum is σ = 1446004560. Its totient is φ = 821366784.

The previous prime is 1115599741. The next prime is 1115599747. The reversal of 1115599745 is 5479955111.

It can be written as a sum of positive squares in 8 ways, for example, as 422014849 + 693584896 = 20543^2 + 26336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115599745 - 2² = 1115599741 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115599745.

It is not an unprimeable number, because it can be changed into a prime (1115599741) 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, 3560 + ... + 47369.

It is an arithmetic number, because the mean of its divisors is an integer number (90375285).

Almost surely, 2^1115599745 is an apocalyptic number.

It is an amenable number.

1115599745 is a deficient number, since it is larger than the sum of its proper divisors (330404815).

1115599745 is a wasteful number, since it uses less digits than its factorization.

1115599745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51284.

The product of its digits is 283500, while the sum is 47.

The square root of 1115599745 is about 33400.5949797305. The cubic root of 1115599745 is about 1037.1370176476.

The spelling of 1115599745 in words is "one billion, one hundred fifteen million, five hundred ninety-nine thousand, seven hundred forty-five".