8723732945 has 16 divisors (see below), whose sum is σ = 10508900688. Its totient is φ = 6952089600.

The previous prime is 8723732929. The next prime is 8723732957. The reversal of 8723732945 is 5492373278.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4800965521 + 3922767424 = 69289^2 + 62632^2 .

It is not a de Polignac number, because 8723732945 - 2⁴ = 8723732929 is a prime.

It is a super-2 number, since 2×8723732945² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8723732893 and 8723732902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1715747 + ... + 1720823.

It is an arithmetic number, because the mean of its divisors is an integer number (656806293).

Almost surely, 2^8723732945 is an apocalyptic number.

It is an amenable number.

8723732945 is a deficient number, since it is larger than the sum of its proper divisors (1785167743).

8723732945 is a wasteful number, since it uses less digits than its factorization.

8723732945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6340.

The product of its digits is 2540160, while the sum is 50.

The square root of 8723732945 is about 93400.9258251758. The cubic root of 8723732945 is about 2058.5786016562.

The spelling of 8723732945 in words is "eight billion, seven hundred twenty-three million, seven hundred thirty-two thousand, nine hundred forty-five".