189938 has 8 divisors (see below), whose sum is σ = 325632. Its totient is φ = 81396.

The previous prime is 189929. The next prime is 189947. The reversal of 189938 is 839981.

It is an interprime number because it is at equal distance from previous prime (189929) and next prime (189947).

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

It is a Curzon number.

It is an unprimeable number.

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, 6770 + ... + 6797.

It is an arithmetic number, because the mean of its divisors is an integer number (40704).

2¹⁸⁹⁹³⁸ is an apocalyptic number.

189938 is a deficient number, since it is larger than the sum of its proper divisors (135694).

189938 is a wasteful number, since it uses less digits than its factorization.

189938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13576.

The product of its digits is 15552, while the sum is 38.

The square root of 189938 is about 435.8187696738. The cubic root of 189938 is about 57.4827169229.

The spelling of 189938 in words is "one hundred eighty-nine thousand, nine hundred thirty-eight".