1133543440 has 20 divisors (see below), whose sum is σ = 2635488684. Its totient is φ = 453417344.

The previous prime is 1133543423. The next prime is 1133543443. The reversal of 1133543440 is 443453311.

It can be written as a sum of positive squares in 2 ways, for example, as 404975376 + 728568064 = 20124^2 + 26992^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1133543399 and 1133543408.

It is not an unprimeable number, because it can be changed into a prime (1133543443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7084567 + ... + 7084726.

Almost surely, 2^1133543440 is an apocalyptic number.

1133543440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1133543440 is an abundant number, since it is smaller than the sum of its proper divisors (1501945244).

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

1133543440 is a wasteful number, since it uses less digits than its factorization.

1133543440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14169306 (or 14169300 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1133543440 is about 33668.1368655885. The cubic root of 1133543440 is about 1042.6680262917.

Adding to 1133543440 its reverse (443453311), we get a palindrome (1576996751).

The spelling of 1133543440 in words is "one billion, one hundred thirty-three million, five hundred forty-three thousand, four hundred forty".