189738 has 24 divisors (see below), whose sum is σ = 419328. Its totient is φ = 61992.

The previous prime is 189733. The next prime is 189743. The reversal of 189738 is 837981.

189738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189733) and next prime (189743).

It is not an unprimeable number, because it can be changed into a prime (189733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1431 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (17472).

2¹⁸⁹⁷³⁸ is an apocalyptic number.

189738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189738 is an abundant number, since it is smaller than the sum of its proper divisors (229590).

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

189738 is a wasteful number, since it uses less digits than its factorization.

189738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 215 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 189738 is about 435.5892560658. The cubic root of 189738 is about 57.4625338790.

It can be divided in two parts, 18973 and 8, that added together give a palindrome (18981).

The spelling of 189738 in words is "one hundred eighty-nine thousand, seven hundred thirty-eight".