9945372416 has 108 divisors (see below), whose sum is σ = 23145479280. Its totient is φ = 4252631040.

The previous prime is 9945372391. The next prime is 9945372421. The reversal of 9945372416 is 6142735499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9645821 + ... + 9646851.

Almost surely, 2^9945372416 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 9945372416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11572739640).

9945372416 is an abundant number, since it is smaller than the sum of its proper divisors (13200106864).

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

9945372416 is a wasteful number, since it uses less digits than its factorization.

9945372416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1809 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 9945372416 is about 99726.4880360278. The cubic root of 9945372416 is about 2150.5044726442.

The spelling of 9945372416 in words is "nine billion, nine hundred forty-five million, three hundred seventy-two thousand, four hundred sixteen".