189696789 has 16 divisors (see below), whose sum is σ = 283933440. Its totient is φ = 125159040.

The previous prime is 189696751. The next prime is 189696797. The reversal of 189696789 is 987696981.

189696789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189696789 - 2²⁴ = 172919573 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189696739) 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, 33597 + ... + 38834.

It is an arithmetic number, because the mean of its divisors is an integer number (17745840).

Almost surely, 2^189696789 is an apocalyptic number.

It is an amenable number.

189696789 is a deficient number, since it is larger than the sum of its proper divisors (94236651).

189696789 is an equidigital number, since it uses as much as digits as its factorization.

189696789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72537 (or 72531 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 189696789 is about 13773.0457415925. The cubic root of 189696789 is about 574.5837329978.

The spelling of 189696789 in words is "one hundred eighty-nine million, six hundred ninety-six thousand, seven hundred eighty-nine".