1181316132 has 72 divisors (see below), whose sum is σ = 3094221312. Its totient is φ = 379612800.

The previous prime is 1181316121. The next prime is 1181316187. The reversal of 1181316132 is 2316131811.

1181316132 is a `hidden beast` number, since 1 + 18 + 1 + 31 + 613 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1181316096 and 1181316105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311713 + ... + 315479.

It is an arithmetic number, because the mean of its divisors is an integer number (42975296).

Almost surely, 2^1181316132 is an apocalyptic number.

1181316132 is a gapful number since it is divisible by the number (12) 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 1181316132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1547110656).

1181316132 is an abundant number, since it is smaller than the sum of its proper divisors (1912905180).

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

1181316132 is a wasteful number, since it uses less digits than its factorization.

1181316132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089 (or 4084 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1181316132 is about 34370.2797777382. The cubic root of 1181316132 is about 1057.1145365087.

Adding to 1181316132 its reverse (2316131811), we get a palindrome (3497447943).

The spelling of 1181316132 in words is "one billion, one hundred eighty-one million, three hundred sixteen thousand, one hundred thirty-two".