161141161 has 8 divisors (see below), whose sum is σ = 162432000. Its totient is φ = 159855360.

The previous prime is 161141159. The next prime is 161141191.

It is a happy number.

161141161 is nontrivially palindromic in base 10.

161141161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161141161 - 2¹ = 161141159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161141191) 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, 84820 + ... + 86698.

It is an arithmetic number, because the mean of its divisors is an integer number (20304000).

Almost surely, 2^161141161 is an apocalyptic number.

It is an amenable number.

161141161 is a deficient number, since it is larger than the sum of its proper divisors (1290839).

161141161 is a wasteful number, since it uses less digits than its factorization.

161141161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519.

The product of its digits is 144, while the sum is 22.

The square root of 161141161 is about 12694.1388443644. The cubic root of 161141161 is about 544.1711284444.

The spelling of 161141161 in words is "one hundred sixty-one million, one hundred forty-one thousand, one hundred sixty-one".