161190 has 40 divisors (see below), whose sum is σ = 435600. Its totient is φ = 42768.

The previous prime is 161167. The next prime is 161201. The reversal of 161190 is 91161.

It is a super-2 number, since 2×161190² = 51964432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 711 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (10890).

2¹⁶¹¹⁹⁰ is an apocalyptic number.

161190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217800).

161190 is an abundant number, since it is smaller than the sum of its proper divisors (274410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161190 is a wasteful number, since it uses less digits than its factorization.

161190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 209 counting only the distinct ones).

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

The square root of 161190 is about 401.4847444175. The cubic root of 161190 is about 54.4226099066.

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

The spelling of 161190 in words is "one hundred sixty-one thousand, one hundred ninety".