9538639488 has 768 divisors, whose sum is σ = 35721216000. Its totient is φ = 2490808320.

The previous prime is 9538639477. The next prime is 9538639493. The reversal of 9538639488 is 8849368359.

9538639488 is a `hidden beast` number, since 9 + 538 + 6 + 3 + 94 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 120742233 + ... + 120742311.

It is an arithmetic number, because the mean of its divisors is an integer number (46512000).

Almost surely, 2^9538639488 is an apocalyptic number.

9538639488 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9538639488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17860608000).

9538639488 is an abundant number, since it is smaller than the sum of its proper divisors (26182576512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9538639488 is a wasteful number, since it uses less digits than its factorization.

9538639488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 145 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The square root of 9538639488 is about 97665.9586959551. The cubic root of 9538639488 is about 2120.7793123978.

The spelling of 9538639488 in words is "nine billion, five hundred thirty-eight million, six hundred thirty-nine thousand, four hundred eighty-eight".