9618993732 has 72 divisors (see below), whose sum is σ = 23840334336. Its totient is φ = 3018015936.

The previous prime is 9618993707. The next prime is 9618993733. The reversal of 9618993732 is 2373998169.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (9618993733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 673053 + ... + 687195.

Almost surely, 2^9618993732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9618993732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11920167168).

9618993732 is an abundant number, since it is smaller than the sum of its proper divisors (14221340604).

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

9618993732 is a wasteful number, since it uses less digits than its factorization.

9618993732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345 (or 14324 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 57.

The square root of 9618993732 is about 98076.4687985859. The cubic root of 9618993732 is about 2126.7178713749.

The spelling of 9618993732 in words is "nine billion, six hundred eighteen million, nine hundred ninety-three thousand, seven hundred thirty-two".