180938 has 4 divisors (see below), whose sum is σ = 271410. Its totient is φ = 90468.

The previous prime is 180907. The next prime is 180949. The reversal of 180938 is 839081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839081 = 353 ⋅2377.

It can be written as a sum of positive squares in only one way, i.e., 142129 + 38809 = 377^2 + 197^2 .

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 180938.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45233 + ... + 45236.

2¹⁸⁰⁹³⁸ is an apocalyptic number.

180938 is a deficient number, since it is larger than the sum of its proper divisors (90472).

180938 is an equidigital number, since it uses as much as digits as its factorization.

180938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90471.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 180938 is about 425.3680759060. The cubic root of 180938 is about 56.5600687273.

The spelling of 180938 in words is "one hundred eighty thousand, nine hundred thirty-eight".