190865 has 8 divisors (see below), whose sum is σ = 233280. Its totient is φ = 149872.

The previous prime is 190843. The next prime is 190871. The reversal of 190865 is 568091.

190865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190865 - 2¹⁴ = 174481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29 + ... + 618.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2¹⁹⁰⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

190865 is a deficient number, since it is larger than the sum of its proper divisors (42415).

190865 is an equidigital number, since it uses as much as digits as its factorization.

190865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 190865 is about 436.8809906599. The cubic root of 190865 is about 57.5760807643.

It can be divided in two parts, 19086 and 5, that added together give a palindrome (19091).

The spelling of 190865 in words is "one hundred ninety thousand, eight hundred sixty-five".