9123788745 has 48 divisors (see below), whose sum is σ = 16802145360. Its totient is φ = 4571223552.

The previous prime is 9123788623. The next prime is 9123788747. The reversal of 9123788745 is 5478873219.

It is a happy number.

9123788745 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 88906041 + 9034882704 = 9429^2 + 95052^2 .

It is not a de Polignac number, because 9123788745 - 2⁸ = 9123788489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9123788691 and 9123788700.

It is not an unprimeable number, because it can be changed into a prime (9123788747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46194 + ... + 142763.

It is an arithmetic number, because the mean of its divisors is an integer number (350044695).

Almost surely, 2^9123788745 is an apocalyptic number.

It is an amenable number.

9123788745 is a deficient number, since it is larger than the sum of its proper divisors (7678356615).

9123788745 is a wasteful number, since it uses less digits than its factorization.

9123788745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189034 (or 189031 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 9123788745 is about 95518.5256638732. The cubic root of 9123788745 is about 2089.5771329942.

The spelling of 9123788745 in words is "nine billion, one hundred twenty-three million, seven hundred eighty-eight thousand, seven hundred forty-five".