8732517818 has 4 divisors (see below), whose sum is σ = 13098776730. Its totient is φ = 4366258908.

The previous prime is 8732517793. The next prime is 8732517863. The reversal of 8732517818 is 8187152378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8187152378 = 2 ⋅4093576189.

It can be written as a sum of positive squares in only one way, i.e., 5560237489 + 3172280329 = 74567^2 + 56323^2 .

It is a super-2 number, since 2×8732517818² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2183129453 + ... + 2183129456.

Almost surely, 2^8732517818 is an apocalyptic number.

8732517818 is a deficient number, since it is larger than the sum of its proper divisors (4366258912).

8732517818 is a wasteful number, since it uses less digits than its factorization.

8732517818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366258911.

The product of its digits is 752640, while the sum is 50.

The square root of 8732517818 is about 93447.9417536844. The cubic root of 8732517818 is about 2059.2693718696.

The spelling of 8732517818 in words is "eight billion, seven hundred thirty-two million, five hundred seventeen thousand, eight hundred eighteen".