189169689 has 16 divisors (see below), whose sum is σ = 258158592. Its totient is φ = 123158928.

The previous prime is 189169679. The next prime is 189169703. The reversal of 189169689 is 986961981.

It is not a de Polignac number, because 189169689 - 2⁹ = 189169177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189169649) 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, 78192 + ... + 80574.

It is an arithmetic number, because the mean of its divisors is an integer number (16134912).

Almost surely, 2^189169689 is an apocalyptic number.

It is an amenable number.

189169689 is a deficient number, since it is larger than the sum of its proper divisors (68988903).

189169689 is a wasteful number, since it uses less digits than its factorization.

189169689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996.

The product of its digits is 1679616, while the sum is 57.

The square root of 189169689 is about 13753.8972295128. The cubic root of 189169689 is about 574.0510512773.

The spelling of 189169689 in words is "one hundred eighty-nine million, one hundred sixty-nine thousand, six hundred eighty-nine".