189441936 has 40 divisors (see below), whose sum is σ = 543769760. Its totient is φ = 63147168.

The previous prime is 189441893. The next prime is 189441943. The reversal of 189441936 is 639144981.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 189441891 and 189441900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218830 + ... + 219693.

It is an arithmetic number, because the mean of its divisors is an integer number (13594244).

Almost surely, 2^189441936 is an apocalyptic number.

189441936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189441936 is an abundant number, since it is smaller than the sum of its proper divisors (354327824).

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

189441936 is a wasteful number, since it uses less digits than its factorization.

189441936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438540 (or 438528 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 189441936 is about 13763.7907569100. The cubic root of 189441936 is about 574.3263046128.

The spelling of 189441936 in words is "one hundred eighty-nine million, four hundred forty-one thousand, nine hundred thirty-six".