1168965440 has 56 divisors (see below), whose sum is σ = 2790532392. Its totient is φ = 466421760.

The previous prime is 1168965433. The next prime is 1168965467. The reversal of 1168965440 is 445698611.

It can be written as a sum of positive squares in 4 ways, for example, as 29767936 + 1139197504 = 5456^2 + 33752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1168965391 and 1168965400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130382 + ... + 139058.

Almost surely, 2^1168965440 is an apocalyptic number.

1168965440 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 1168965440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395266196).

1168965440 is an abundant number, since it is smaller than the sum of its proper divisors (1621566952).

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

1168965440 is an equidigital number, since it uses as much as digits as its factorization.

1168965440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9115 (or 9105 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1168965440 is about 34190.1365893733. The cubic root of 1168965440 is about 1053.4175687945.

The spelling of 1168965440 in words is "one billion, one hundred sixty-eight million, nine hundred sixty-five thousand, four hundred forty".