9161507072 has 144 divisors (see below), whose sum is σ = 19581585408. Its totient is φ = 4271554560.

The previous prime is 9161507059. The next prime is 9161507083. The reversal of 9161507072 is 2707051619.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23920193 + ... + 23920575.

It is an arithmetic number, because the mean of its divisors is an integer number (135983232).

Almost surely, 2^9161507072 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 9161507072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9790792704).

9161507072 is an abundant number, since it is smaller than the sum of its proper divisors (10420078336).

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

9161507072 is a wasteful number, since it uses less digits than its factorization.

9161507072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 9161507072 is about 95715.7618785955. The cubic root of 9161507072 is about 2092.4526559928.

The spelling of 9161507072 in words is "nine billion, one hundred sixty-one million, five hundred seven thousand, seventy-two".