1157445268 has 60 divisors (see below), whose sum is σ = 2487736160. Its totient is φ = 469866096.

The previous prime is 1157445259. The next prime is 1157445281. The reversal of 1157445268 is 8625447511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 179305 + ... + 185647.

Almost surely, 2^1157445268 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 1157445268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243868080).

1157445268 is an abundant number, since it is smaller than the sum of its proper divisors (1330290892).

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

1157445268 is an equidigital number, since it uses as much as digits as its factorization.

1157445268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394 (or 6371 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 1157445268 is about 34021.2473022375. The cubic root of 1157445268 is about 1049.9456564467.

The spelling of 1157445268 in words is "one billion, one hundred fifty-seven million, four hundred forty-five thousand, two hundred sixty-eight".