189868 has 12 divisors (see below), whose sum is σ = 379792. Its totient is φ = 81360.

The previous prime is 189859. The next prime is 189877. The reversal of 189868 is 868981.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (189859) and next prime (189877).

189868 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 189868.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363 + ... + 3418.

2¹⁸⁹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

189868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189868 is a wasteful number, since it uses less digits than its factorization.

189868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792 (or 6790 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 189868 is about 435.7384536623. The cubic root of 189868 is about 57.4756544699.

The spelling of 189868 in words is "one hundred eighty-nine thousand, eight hundred sixty-eight".