9892397538 has 192 divisors, whose sum is σ = 24403968000. Its totient is φ = 2961372960.

The previous prime is 9892397531. The next prime is 9892397561. The reversal of 9892397538 is 8357932989.

9892397538 is a `hidden beast` number, since 9 + 8 + 9 + 2 + 3 + 97 + 538 = 666.

It is a super-2 number, since 2×9892397538² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9892397531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 77892831 + ... + 77892957.

It is an arithmetic number, because the mean of its divisors is an integer number (127104000).

Almost surely, 2^9892397538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9892397538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12201984000).

9892397538 is an abundant number, since it is smaller than the sum of its proper divisors (14511570462).

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

9892397538 is a wasteful number, since it uses less digits than its factorization.

9892397538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 261 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 9892397538 is about 99460.5325644298. The cubic root of 9892397538 is about 2146.6793909535.

The spelling of 9892397538 in words is "nine billion, eight hundred ninety-two million, three hundred ninety-seven thousand, five hundred thirty-eight".