189910 has 16 divisors (see below), whose sum is σ = 390816. Its totient is φ = 65088.

The previous prime is 189901. The next prime is 189913. The reversal of 189910 is 19981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189913) 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 7 ways as a sum of consecutive naturals, for example, 1287 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (24426).

2¹⁸⁹⁹¹⁰ is an apocalyptic number.

189910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189910 is an abundant number, since it is smaller than the sum of its proper divisors (200906).

It is a weird number, because it is abundant, but not a pseudoperfect number.

189910 is a wasteful number, since it uses less digits than its factorization.

189910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 189910 is about 435.7866450455. The cubic root of 189910 is about 57.4798921499.

The spelling of 189910 in words is "one hundred eighty-nine thousand, nine hundred ten".