9718243828 has 6 divisors (see below), whose sum is σ = 17006926706. Its totient is φ = 4859121912.

The previous prime is 9718243813. The next prime is 9718243849. The reversal of 9718243828 is 8283428179.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8547372304 + 1170871524 = 92452^2 + 34218^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1214780475 + ... + 1214780482.

Almost surely, 2^9718243828 is an apocalyptic number.

It is an amenable number.

9718243828 is a deficient number, since it is larger than the sum of its proper divisors (7288682878).

9718243828 is a wasteful number, since it uses less digits than its factorization.

9718243828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429560961 (or 2429560959 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 9718243828 is about 98581.1535132350. The cubic root of 9718243828 is about 2134.0074458079.

The spelling of 9718243828 in words is "nine billion, seven hundred eighteen million, two hundred forty-three thousand, eight hundred twenty-eight".