5509683945 has 24 divisors (see below), whose sum is σ = 9634642056. Its totient is φ = 2912491008.

The previous prime is 5509683943. The next prime is 5509683947. The reversal of 5509683945 is 5493869055.

It is a happy number.

5509683945 is a `hidden beast` number, since 5 + 509 + 68 + 39 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (5509683943) and next prime (5509683947).

It can be written as a sum of positive squares in 4 ways, for example, as 41525136 + 5468158809 = 6444^2 + 73947^2 .

It is not a de Polignac number, because 5509683945 - 2¹ = 5509683943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5509683891 and 5509683900.

It is not an unprimeable number, because it can be changed into a prime (5509683941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536674 + ... + 546843.

It is an arithmetic number, because the mean of its divisors is an integer number (401443419).

Almost surely, 2^5509683945 is an apocalyptic number.

It is an amenable number.

5509683945 is a deficient number, since it is larger than the sum of its proper divisors (4124958111).

5509683945 is a wasteful number, since it uses less digits than its factorization.

5509683945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083641 (or 1083638 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The square root of 5509683945 is about 74227.2453011696. The cubic root of 5509683945 is about 1766.2095511102.

The spelling of 5509683945 in words is "five billion, five hundred nine million, six hundred eighty-three thousand, nine hundred forty-five".