160891 has 4 divisors (see below), whose sum is σ = 161784. Its totient is φ = 160000.

The previous prime is 160883. The next prime is 160903. The reversal of 160891 is 198061.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 8-Lehmer number, since φ(160891) divides (160891-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 160891 - 2³ = 160883 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (160841) 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 3 ways as a sum of consecutive naturals, for example, 70 + ... + 571.

It is an arithmetic number, because the mean of its divisors is an integer number (40446).

2¹⁶⁰⁸⁹¹ is an apocalyptic number.

160891 is a deficient number, since it is larger than the sum of its proper divisors (893).

160891 is an equidigital number, since it uses as much as digits as its factorization.

160891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 160891 is about 401.1122037535. The cubic root of 160891 is about 54.3889386031.

The spelling of 160891 in words is "one hundred sixty thousand, eight hundred ninety-one".