1163120161 has 16 divisors (see below), whose sum is σ = 1409149440. Its totient is φ = 937198080.

The previous prime is 1163120129. The next prime is 1163120177. The reversal of 1163120161 is 1610213611.

It is not a de Polignac number, because 1163120161 - 2⁵ = 1163120129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163120191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103045 + ... + 113773.

It is an arithmetic number, because the mean of its divisors is an integer number (88071840).

Almost surely, 2^1163120161 is an apocalyptic number.

It is an amenable number.

1163120161 is a deficient number, since it is larger than the sum of its proper divisors (246029279).

1163120161 is a wasteful number, since it uses less digits than its factorization.

1163120161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11664.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1163120161 is about 34104.5475120254. The cubic root of 1163120161 is about 1051.6588023631.

Adding to 1163120161 its reverse (1610213611), we get a palindrome (2773333772).

The spelling of 1163120161 in words is "one billion, one hundred sixty-three million, one hundred twenty thousand, one hundred sixty-one".