1181130132 has 384 divisors, whose sum is σ = 3843883008. Its totient is φ = 273715200.

The previous prime is 1181130053. The next prime is 1181130143. The reversal of 1181130132 is 2310311811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1181130099 and 1181130108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28808032 + ... + 28808072.

It is an arithmetic number, because the mean of its divisors is an integer number (10010112).

Almost surely, 2^1181130132 is an apocalyptic number.

1181130132 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 1181130132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921941504).

1181130132 is an abundant number, since it is smaller than the sum of its proper divisors (2662752876).

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

1181130132 is a wasteful number, since it uses less digits than its factorization.

1181130132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1181130132 is about 34367.5738451233. The cubic root of 1181130132 is about 1057.0590521725.

Adding to 1181130132 its reverse (2310311811), we get a palindrome (3491441943).

The spelling of 1181130132 in words is "one billion, one hundred eighty-one million, one hundred thirty thousand, one hundred thirty-two".