1163544040 has 64 divisors (see below), whose sum is σ = 2766211200. Its totient is φ = 439250688.

The previous prime is 1163544037. The next prime is 1163544047. The reversal of 1163544040 is 404453611.

It is not an unprimeable number, because it can be changed into a prime (1163544047) 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, 207757 + ... + 213283.

It is an arithmetic number, because the mean of its divisors is an integer number (43222050).

Almost surely, 2^1163544040 is an apocalyptic number.

1163544040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163544040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383105600).

1163544040 is an abundant number, since it is smaller than the sum of its proper divisors (1602667160).

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

1163544040 is a wasteful number, since it uses less digits than its factorization.

1163544040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834 (or 5830 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1163544040 is about 34110.7613518080. The cubic root of 1163544040 is about 1051.7865397932.

Adding to 1163544040 its reverse (404453611), we get a palindrome (1567997651).

The spelling of 1163544040 in words is "one billion, one hundred sixty-three million, five hundred forty-four thousand, forty".