189689073 has 32 divisors (see below), whose sum is σ = 302647296. Its totient is φ = 103327488.

The previous prime is 189689051. The next prime is 189689081. The reversal of 189689073 is 370986981.

It is not a de Polignac number, because 189689073 - 2⁵ = 189689041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189689273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208686 + ... + 209592.

It is an arithmetic number, because the mean of its divisors is an integer number (9457728).

Almost surely, 2^189689073 is an apocalyptic number.

It is an amenable number.

189689073 is a deficient number, since it is larger than the sum of its proper divisors (112958223).

189689073 is a wasteful number, since it uses less digits than its factorization.

189689073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 189689073 is about 13772.7656264092. The cubic root of 189689073 is about 574.5759424105.

The spelling of 189689073 in words is "one hundred eighty-nine million, six hundred eighty-nine thousand, seventy-three".