161119 has 4 divisors (see below), whose sum is σ = 184144. Its totient is φ = 138096.

The previous prime is 161093. The next prime is 161123. The reversal of 161119 is 911161.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 161119 - 2⁵ = 161087 is a prime.

It is a super-2 number, since 2×161119² = 51918664322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161096 and 161105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11502 + ... + 11515.

It is an arithmetic number, because the mean of its divisors is an integer number (46036).

2¹⁶¹¹¹⁹ is an apocalyptic number.

161119 is a deficient number, since it is larger than the sum of its proper divisors (23025).

161119 is an equidigital number, since it uses as much as digits as its factorization.

161119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024.

The product of its digits is 54, while the sum is 19.

The square root of 161119 is about 401.3963128879. The cubic root of 161119 is about 54.4146181520.

The spelling of 161119 in words is "one hundred sixty-one thousand, one hundred nineteen".