1139732544 has 112 divisors (see below), whose sum is σ = 3112828928. Its totient is φ = 367815168.

The previous prime is 1139732543. The next prime is 1139732569. The reversal of 1139732544 is 4452379311.

It is not an unprimeable number, because it can be changed into a prime (1139732543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047969 + ... + 1049055.

Almost surely, 2^1139732544 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 1139732544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556414464).

1139732544 is an abundant number, since it is smaller than the sum of its proper divisors (1973096384).

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

1139732544 is a wasteful number, since it uses less digits than its factorization.

1139732544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1262 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 1139732544 is about 33759.9251184004. The cubic root of 1139732544 is about 1044.5622256122.

The spelling of 1139732544 in words is "one billion, one hundred thirty-nine million, seven hundred thirty-two thousand, five hundred forty-four".