9718813252 has 12 divisors (see below), whose sum is σ = 17008870396. Its totient is φ = 4859136000.

The previous prime is 9718813241. The next prime is 9718813271. The reversal of 9718813252 is 2523188179.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4708155456 + 5010657796 = 68616^2 + 70786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28252 + ... + 142252.

Almost surely, 2^9718813252 is an apocalyptic number.

It is an amenable number.

9718813252 is a deficient number, since it is larger than the sum of its proper divisors (7290057144).

9718813252 is a wasteful number, since it uses less digits than its factorization.

9718813252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135318 (or 135316 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 9718813252 is about 98584.0415686028. The cubic root of 9718813252 is about 2134.0491245085.

The spelling of 9718813252 in words is "nine billion, seven hundred eighteen million, eight hundred thirteen thousand, two hundred fifty-two".