9931918088 has 8 divisors (see below), whose sum is σ = 18622346430. Its totient is φ = 4965959040.

The previous prime is 9931918019. The next prime is 9931918099. The reversal of 9931918088 is 8808191399.

It is a happy number.

9931918088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9742084804 + 189833284 = 98702^2 + 13778^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620744873 + ... + 620744888.

Almost surely, 2^9931918088 is an apocalyptic number.

It is an amenable number.

9931918088 is a deficient number, since it is larger than the sum of its proper divisors (8690428342).

9931918088 is a wasteful number, since it uses less digits than its factorization.

9931918088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241489767 (or 1241489763 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 56.

The square root of 9931918088 is about 99659.0090659144. The cubic root of 9931918088 is about 2149.5342844171.

The spelling of 9931918088 in words is "nine billion, nine hundred thirty-one million, nine hundred eighteen thousand, eighty-eight".