9157685472 has 288 divisors, whose sum is σ = 29440454400. Its totient is φ = 2767385088.

The previous prime is 9157685441. The next prime is 9157685489. The reversal of 9157685472 is 2745867519.

9157685472 is a `hidden beast` number, since 91 + 5 + 7 + 6 + 8 + 547 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8614413 + ... + 8615475.

It is an arithmetic number, because the mean of its divisors is an integer number (102223800).

Almost surely, 2^9157685472 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 9157685472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14720227200).

9157685472 is an abundant number, since it is smaller than the sum of its proper divisors (20282768928).

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

9157685472 is a wasteful number, since it uses less digits than its factorization.

9157685472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1140 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 9157685472 is about 95695.7965221044. The cubic root of 9157685472 is about 2092.1616693264.

The spelling of 9157685472 in words is "nine billion, one hundred fifty-seven million, six hundred eighty-five thousand, four hundred seventy-two".