1161330080 has 24 divisors (see below), whose sum is σ = 2743642692. Its totient is φ = 464531968.

The previous prime is 1161330073. The next prime is 1161330083. The reversal of 1161330080 is 800331611.

It can be written as a sum of positive squares in 2 ways, for example, as 1071383824 + 89946256 = 32732^2 + 9484^2 .

It is not an unprimeable number, because it can be changed into a prime (1161330083) 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, 3628997 + ... + 3629316.

Almost surely, 2^1161330080 is an apocalyptic number.

1161330080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161330080 is an abundant number, since it is smaller than the sum of its proper divisors (1582312612).

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

1161330080 is an equidigital number, since it uses as much as digits as its factorization.

1161330080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258328 (or 7258320 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1161330080 is about 34078.2933844992. The cubic root of 1161330080 is about 1051.1190126085.

Adding to 1161330080 its reverse (800331611), we get a palindrome (1961661691).

The spelling of 1161330080 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, eighty".