180146 has 4 divisors (see below), whose sum is σ = 270222. Its totient is φ = 90072.

The previous prime is 180137. The next prime is 180161. The reversal of 180146 is 641081.

180146 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641081 = 7 ⋅91583.

It can be written as a sum of positive squares in only one way, i.e., 172225 + 7921 = 415^2 + 89^2 .

It is a Curzon number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45035 + ... + 45038.

2¹⁸⁰¹⁴⁶ is an apocalyptic number.

180146 is a deficient number, since it is larger than the sum of its proper divisors (90076).

180146 is an equidigital number, since it uses as much as digits as its factorization.

180146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90075.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 180146 is about 424.4360964857. The cubic root of 180146 is about 56.4774233029.

The spelling of 180146 in words is "one hundred eighty thousand, one hundred forty-six".