189134409 has 4 divisors (see below), whose sum is σ = 252179216. Its totient is φ = 126089604.

The previous prime is 189134399. The next prime is 189134419. The reversal of 189134409 is 904431981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (189134399) and next prime (189134419).

It is not a de Polignac number, because 189134409 - 2⁹ = 189133897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189134419) 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, 31522399 + ... + 31522404.

It is an arithmetic number, because the mean of its divisors is an integer number (63044804).

Almost surely, 2^189134409 is an apocalyptic number.

It is an amenable number.

189134409 is a deficient number, since it is larger than the sum of its proper divisors (63044807).

189134409 is an equidigital number, since it uses as much as digits as its factorization.

189134409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63044806.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 189134409 is about 13752.6146241360. The cubic root of 189134409 is about 574.0153623669.

The spelling of 189134409 in words is "one hundred eighty-nine million, one hundred thirty-four thousand, four hundred nine".