9917923180 has 48 divisors (see below), whose sum is σ = 22728172320. Its totient is φ = 3605388800.

The previous prime is 9917923157. The next prime is 9917923201. The reversal of 9917923180 is 813297199.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070970 + ... + 1080190.

It is an arithmetic number, because the mean of its divisors is an integer number (473503590).

Almost surely, 2^9917923180 is an apocalyptic number.

It is an amenable number.

9917923180 is an abundant number, since it is smaller than the sum of its proper divisors (12810249140).

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

9917923180 is a wasteful number, since it uses less digits than its factorization.

9917923180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14130 (or 14128 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 9917923180 is about 99588.7703508784. The cubic root of 9917923180 is about 2148.5241849591.

The spelling of 9917923180 in words is "nine billion, nine hundred seventeen million, nine hundred twenty-three thousand, one hundred eighty".