9918894792 has 32 divisors (see below), whose sum is σ = 24812301600. Its totient is φ = 3304289664.

The previous prime is 9918894761. The next prime is 9918894793. The reversal of 9918894792 is 2974988199.

It is not an unprimeable number, because it can be changed into a prime (9918894793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84942 + ... + 164477.

It is an arithmetic number, because the mean of its divisors is an integer number (775384425).

Almost surely, 2^9918894792 is an apocalyptic number.

It is an amenable number.

9918894792 is an abundant number, since it is smaller than the sum of its proper divisors (14893406808).

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

9918894792 is a wasteful number, since it uses less digits than its factorization.

9918894792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251085 (or 251081 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 66.

The square root of 9918894792 is about 99593.6483516896. The cubic root of 9918894792 is about 2148.5943429172.

The spelling of 9918894792 in words is "nine billion, nine hundred eighteen million, eight hundred ninety-four thousand, seven hundred ninety-two".