1155408544 has 48 divisors (see below), whose sum is σ = 2401963200. Its totient is φ = 545577984.

The previous prime is 1155408497. The next prime is 1155408547. The reversal of 1155408544 is 4458045511.

It is not an unprimeable number, because it can be changed into a prime (1155408547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202077 + ... + 207715.

It is an arithmetic number, because the mean of its divisors is an integer number (50040900).

Almost surely, 2^1155408544 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 1155408544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1200981600).

1155408544 is an abundant number, since it is smaller than the sum of its proper divisors (1246554656).

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

1155408544 is a wasteful number, since it uses less digits than its factorization.

1155408544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005 (or 5997 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The square root of 1155408544 is about 33991.3010048159. The cubic root of 1155408544 is about 1049.3294415445.

The spelling of 1155408544 in words is "one billion, one hundred fifty-five million, four hundred eight thousand, five hundred forty-four".