189436 has 12 divisors (see below), whose sum is σ = 357112. Its totient is φ = 87408.

The previous prime is 189433. The next prime is 189437. The reversal of 189436 is 634981.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 189398 and 189407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770 + ... + 1873.

2¹⁸⁹⁴³⁶ is an apocalyptic number.

It is an amenable number.

189436 is a deficient number, since it is larger than the sum of its proper divisors (167676).

189436 is a wasteful number, since it uses less digits than its factorization.

189436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660 (or 3658 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 189436 is about 435.2424611639. The cubic root of 189436 is about 57.4320305877.

It can be divided in two parts, 189 and 436, that added together give a 4-th power (625 = 5⁴).

The spelling of 189436 in words is "one hundred eighty-nine thousand, four hundred thirty-six".