9938481188 has 6 divisors (see below), whose sum is σ = 17392342086. Its totient is φ = 4969240592.

The previous prime is 9938481187. The next prime is 9938481199. The reversal of 9938481188 is 8811848399.

It can be written as a sum of positive squares in only one way, i.e., 6825733924 + 3112747264 = 82618^2 + 55792^2 .

It is not an unprimeable number, because it can be changed into a prime (9938481187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1242310145 + ... + 1242310152.

It is an arithmetic number, because the mean of its divisors is an integer number (2898723681).

Almost surely, 2^9938481188 is an apocalyptic number.

It is an amenable number.

9938481188 is a deficient number, since it is larger than the sum of its proper divisors (7453860898).

9938481188 is a wasteful number, since it uses less digits than its factorization.

9938481188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484620301 (or 2484620299 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 59.

The square root of 9938481188 is about 99691.9314087153. The cubic root of 9938481188 is about 2150.0076573010.

The spelling of 9938481188 in words is "nine billion, nine hundred thirty-eight million, four hundred eighty-one thousand, one hundred eighty-eight".