1130511440 has 20 divisors (see below), whose sum is σ = 2628439284. Its totient is φ = 452204544.

The previous prime is 1130511427. The next prime is 1130511443. The reversal of 1130511440 is 441150311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 533979664 + 596531776 = 23108^2 + 24424^2 .

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

It is a super-2 number, since 2×1130511440² = 2556112231941747200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130511443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7065617 + ... + 7065776.

Almost surely, 2^1130511440 is an apocalyptic number.

1130511440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1130511440 is an abundant number, since it is smaller than the sum of its proper divisors (1497927844).

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

1130511440 is a wasteful number, since it uses less digits than its factorization.

1130511440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14131406 (or 14131400 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1130511440 is about 33623.0789785826. The cubic root of 1130511440 is about 1041.7375539883.

Adding to 1130511440 its reverse (441150311), we get a palindrome (1571661751).

The spelling of 1130511440 in words is "one billion, one hundred thirty million, five hundred eleven thousand, four hundred forty".