8538148440 has 160 divisors (see below), whose sum is σ = 28749077280. Its totient is φ = 2272762368.

The previous prime is 8538148397. The next prime is 8538148441. The reversal of 8538148440 is 448418358.

8538148440 is a `hidden beast` number, since 8 + 53 + 81 + 484 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538148441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2094244 + ... + 2098316.

It is an arithmetic number, because the mean of its divisors is an integer number (179681733).

Almost surely, 2^8538148440 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 8538148440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14374538640).

8538148440 is an abundant number, since it is smaller than the sum of its proper divisors (20210928840).

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

8538148440 is a wasteful number, since it uses less digits than its factorization.

8538148440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 8538148440 is about 92402.1019241446. The cubic root of 8538148440 is about 2043.8761080336.

The spelling of 8538148440 in words is "eight billion, five hundred thirty-eight million, one hundred forty-eight thousand, four hundred forty".