190161 has 8 divisors (see below), whose sum is σ = 281760. Its totient is φ = 126756.

The previous prime is 190159. The next prime is 190181. The reversal of 190161 is 161091.

It is not a de Polignac number, because 190161 - 2¹ = 190159 is a prime.

It is a super-2 number, since 2×190161² = 72322411842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190121) 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, 3495 + ... + 3548.

It is an arithmetic number, because the mean of its divisors is an integer number (35220).

2¹⁹⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

190161 is a deficient number, since it is larger than the sum of its proper divisors (91599).

190161 is an equidigital number, since it uses as much as digits as its factorization.

190161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052 (or 7046 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 190161 is about 436.0745349135. The cubic root of 190161 is about 57.5052043179.

It can be divided in two parts, 190 and 161, that added together give a triangular number (351 = T₂₆).

The spelling of 190161 in words is "one hundred ninety thousand, one hundred sixty-one".