9945630180 has 144 divisors (see below), whose sum is σ = 32780966400. Its totient is φ = 2431503360.

The previous prime is 9945630179. The next prime is 9945630181. The reversal of 9945630180 is 810365499.

It is a happy number.

9945630180 is a `hidden beast` number, since 9 + 9 + 4 + 5 + 630 + 1 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (9945630179) and next prime (9945630181).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9945630181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59116 + ... + 152924.

It is an arithmetic number, because the mean of its divisors is an integer number (227645600).

Almost surely, 2^9945630180 is an apocalyptic number.

9945630180 is a gapful number since it is divisible by the number (90) 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 9945630180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16390483200).

9945630180 is an abundant number, since it is smaller than the sum of its proper divisors (22835336220).

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

9945630180 is a wasteful number, since it uses less digits than its factorization.

9945630180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93874 (or 93869 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 9945630180 is about 99727.7803823990. The cubic root of 9945630180 is about 2150.5230513970.

The spelling of 9945630180 in words is "nine billion, nine hundred forty-five million, six hundred thirty thousand, one hundred eighty".