1135144520 has 32 divisors (see below), whose sum is σ = 2584854720. Its totient is φ = 448585920.

The previous prime is 1135144499. The next prime is 1135144523. The reversal of 1135144520 is 254415311.

It is a self number, because there is not a number n which added to its sum of digits gives 1135144520.

It is not an unprimeable number, because it can be changed into a prime (1135144523) 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, 167636 + ... + 174275.

It is an arithmetic number, because the mean of its divisors is an integer number (80776710).

Almost surely, 2^1135144520 is an apocalyptic number.

1135144520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135144520 is an abundant number, since it is smaller than the sum of its proper divisors (1449710200).

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

1135144520 is a wasteful number, since it uses less digits than its factorization.

1135144520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342005 (or 342001 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1135144520 is about 33691.9058528899. The cubic root of 1135144520 is about 1043.1587028430.

Adding to 1135144520 its reverse (254415311), we get a palindrome (1389559831).

The spelling of 1135144520 in words is "one billion, one hundred thirty-five million, one hundred forty-four thousand, five hundred twenty".