189465 has 16 divisors (see below), whose sum is σ = 321408. Its totient is φ = 94976.

The previous prime is 189463. The next prime is 189467. The reversal of 189465 is 564981.

189465 = T₁₃₆ + T₁₃₇ + ... + T₁₅₃.

It is an interprime number because it is at equal distance from previous prime (189463) and next prime (189467).

It is a cyclic number.

It is not a de Polignac number, because 189465 - 2¹ = 189463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117 + ... + 626.

It is an arithmetic number, because the mean of its divisors is an integer number (20088).

2¹⁸⁹⁴⁶⁵ is an apocalyptic number.

189465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189465 is a deficient number, since it is larger than the sum of its proper divisors (131943).

189465 is a wasteful number, since it uses less digits than its factorization.

189465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768.

The product of its digits is 8640, while the sum is 33.

The square root of 189465 is about 435.2757746533. The cubic root of 189465 is about 57.4349611181.

The spelling of 189465 in words is "one hundred eighty-nine thousand, four hundred sixty-five".