185845 has 16 divisors (see below), whose sum is σ = 253440. Its totient is φ = 129600.

The previous prime is 185833. The next prime is 185849. The reversal of 185845 is 548581.

It is not a de Polignac number, because 185845 - 2⁵ = 185813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651 + ... + 1759.

It is an arithmetic number, because the mean of its divisors is an integer number (15840).

2¹⁸⁵⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

185845 is a deficient number, since it is larger than the sum of its proper divisors (67595).

185845 is a wasteful number, since it uses less digits than its factorization.

185845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its digits is 6400, while the sum is 31.

The square root of 185845 is about 431.0974367820. The cubic root of 185845 is about 57.0668140287.

185845 divided by its sum of digits (31) gives a palindrome (5995).

The spelling of 185845 in words is "one hundred eighty-five thousand, eight hundred forty-five".