189384175609 has 4 divisors (see below), whose sum is σ = 191121645220. Its totient is φ = 187646706000.

The previous prime is 189384175597. The next prime is 189384175619. The reversal of 189384175609 is 906571483981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156911054400 + 32473121209 = 396120^2 + 180203^2 .

It is a cyclic number.

It is not a de Polignac number, because 189384175609 - 2²³ = 189375787001 is a prime.

It is a super-2 number, since 2×189384175609² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189384175619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868734642 + ... + 868734859.

It is an arithmetic number, because the mean of its divisors is an integer number (47780411305).

Almost surely, 2^189384175609 is an apocalyptic number.

It is an amenable number.

189384175609 is a deficient number, since it is larger than the sum of its proper divisors (1737469611).

189384175609 is a wasteful number, since it uses less digits than its factorization.

189384175609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737469610.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 189384175609 in words is "one hundred eighty-nine billion, three hundred eighty-four million, one hundred seventy-five thousand, six hundred nine".