1161330771 has 8 divisors (see below), whose sum is σ = 1567097280. Its totient is φ = 764892392.

The previous prime is 1161330761. The next prime is 1161330791. The reversal of 1161330771 is 1770331611.

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

It is a cyclic number.

It is not a de Polignac number, because 1161330771 - 2⁵ = 1161330739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161330701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2331741 + ... + 2332238.

It is an arithmetic number, because the mean of its divisors is an integer number (195887160).

Almost surely, 2^1161330771 is an apocalyptic number.

1161330771 is a deficient number, since it is larger than the sum of its proper divisors (405766509).

1161330771 is an equidigital number, since it uses as much as digits as its factorization.

1161330771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664065.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 1161330771 is about 34078.3035229162. The cubic root of 1161330771 is about 1051.1192210830.

The spelling of 1161330771 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, seven hundred seventy-one".