180863 has 4 divisors (see below), whose sum is σ = 191520. Its totient is φ = 170208.

The previous prime is 180847. The next prime is 180871. The reversal of 180863 is 368081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368081 = 7 ⋅52583.

It is a cyclic number.

It is not a de Polignac number, because 180863 - 2⁴ = 180847 is a prime.

It is a super-2 number, since 2×180863² = 65422849538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5303 + ... + 5336.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2¹⁸⁰⁸⁶³ is an apocalyptic number.

180863 is a deficient number, since it is larger than the sum of its proper divisors (10657).

180863 is a wasteful number, since it uses less digits than its factorization.

180863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10656.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 180863 is about 425.2799078254. The cubic root of 180863 is about 56.5522528062.

The spelling of 180863 in words is "one hundred eighty thousand, eight hundred sixty-three".