1157538276 has 84 divisors (see below), whose sum is σ = 3080476224. Its totient is φ = 380343600.

The previous prime is 1157538271. The next prime is 1157538299. The reversal of 1157538276 is 6728357511.

It is a happy number.

1157538276 is a `hidden beast` number, since 1 + 1 + 575 + 3 + 8 + 2 + 76 = 666.

1157538276 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1157538271) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 204241 + ... + 209831.

It is an arithmetic number, because the mean of its divisors is an integer number (36672336).

Almost surely, 2^1157538276 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 1157538276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540238112).

1157538276 is an abundant number, since it is smaller than the sum of its proper divisors (1922937948).

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

1157538276 is an equidigital number, since it uses as much as digits as its factorization.

1157538276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684 (or 5667 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 1157538276 is about 34022.6141852739. The cubic root of 1157538276 is about 1049.9737789370.

The spelling of 1157538276 in words is "one billion, one hundred fifty-seven million, five hundred thirty-eight thousand, two hundred seventy-six".