1161330611 has 8 divisors (see below), whose sum is σ = 1327471200. Its totient is φ = 995249088.

The previous prime is 1161330529. The next prime is 1161330641. The reversal of 1161330611 is 1160331611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161330611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161330641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41855 + ... + 63831.

It is an arithmetic number, because the mean of its divisors is an integer number (165933900).

Almost surely, 2^1161330611 is an apocalyptic number.

1161330611 is a deficient number, since it is larger than the sum of its proper divisors (166140589).

1161330611 is an equidigital number, since it uses as much as digits as its factorization.

1161330611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29533.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1161330611 is about 34078.3011753814. The cubic root of 1161330611 is about 1051.1191728111.

It can be divided in two parts, 11613 and 30611, that added together give a palindrome (42224).

The spelling of 1161330611 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, six hundred eleven".