189634 has 8 divisors (see below), whose sum is σ = 289980. Its totient is φ = 92976.

The previous prime is 189619. The next prime is 189643. The reversal of 189634 is 436981.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 27225 = 403^2 + 165^2 .

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

It is a super-2 number, since 2×189634² = 71922107912, which contains 22 as substring.

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 = 189596 and 189605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789 + ... + 1000.

2¹⁸⁹⁶³⁴ is an apocalyptic number.

189634 is a deficient number, since it is larger than the sum of its proper divisors (100346).

189634 is a wasteful number, since it uses less digits than its factorization.

189634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844.

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

The square root of 189634 is about 435.4698611844. The cubic root of 189634 is about 57.4520330907.

The spelling of 189634 in words is "one hundred eighty-nine thousand, six hundred thirty-four".