189534869 has 8 divisors (see below), whose sum is σ = 193425120. Its totient is φ = 185670000.

The previous prime is 189534859. The next prime is 189534911. The reversal of 189534869 is 968435981.

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

It is a cyclic number.

It is not a de Polignac number, because 189534869 - 2²⁴ = 172757653 is a prime.

It is a super-2 number, since 2×189534869² = 71846933133694322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189534869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189534859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9122 + ... + 21500.

It is an arithmetic number, because the mean of its divisors is an integer number (24178140).

Almost surely, 2^189534869 is an apocalyptic number.

It is an amenable number.

189534869 is a deficient number, since it is larger than the sum of its proper divisors (3890251).

189534869 is a wasteful number, since it uses less digits than its factorization.

189534869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12691.

The product of its digits is 1866240, while the sum is 53.

The square root of 189534869 is about 13767.1663387932. The cubic root of 189534869 is about 574.4202034651.

The spelling of 189534869 in words is "one hundred eighty-nine million, five hundred thirty-four thousand, eight hundred sixty-nine".