9918275816 has 16 divisors (see below), whose sum is σ = 18851518500. Its totient is φ = 4891204224.

The previous prime is 9918275797. The next prime is 9918275821. The reversal of 9918275816 is 6185728199.

It can be written as a sum of positive squares in 2 ways, for example, as 8819088100 + 1099187716 = 93910^2 + 33154^2 .

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, 8491091 + ... + 8492258.

Almost surely, 2^9918275816 is an apocalyptic number.

It is an amenable number.

9918275816 is a deficient number, since it is larger than the sum of its proper divisors (8933242684).

9918275816 is a wasteful number, since it uses less digits than its factorization.

9918275816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16983428 (or 16983424 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 56.

The square root of 9918275816 is about 99590.5407958005. The cubic root of 9918275816 is about 2148.5496485561.

The spelling of 9918275816 in words is "nine billion, nine hundred eighteen million, two hundred seventy-five thousand, eight hundred sixteen".