1161328132 has 24 divisors (see below), whose sum is σ = 2059223040. Its totient is φ = 573027840.

The previous prime is 1161328117. The next prime is 1161328177. The reversal of 1161328132 is 2318231611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161328132.

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, 91044 + ... + 103012.

It is an arithmetic number, because the mean of its divisors is an integer number (85800960).

Almost surely, 2^1161328132 is an apocalyptic number.

It is an amenable number.

1161328132 is a deficient number, since it is larger than the sum of its proper divisors (897894908).

1161328132 is a wasteful number, since it uses less digits than its factorization.

1161328132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12291 (or 12289 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 1161328132 is about 34078.2648032437. The cubic root of 1161328132 is about 1051.1184248971.

Adding to 1161328132 its reverse (2318231611), we get a palindrome (3479559743).

The spelling of 1161328132 in words is "one billion, one hundred sixty-one million, three hundred twenty-eight thousand, one hundred thirty-two".