189398392209 has 32 divisors (see below), whose sum is σ = 302270035200. Its totient is φ = 116515843200.

The previous prime is 189398392193. The next prime is 189398392213. The reversal of 189398392209 is 902293893981.

189398392209 is a `hidden beast` number, since 1 + 8 + 9 + 39 + 8 + 392 + 209 = 666.

It is not a de Polignac number, because 189398392209 - 2⁴ = 189398392193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189398392259) 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, 1042284 + ... + 1210434.

It is an arithmetic number, because the mean of its divisors is an integer number (9445938600).

Almost surely, 2^189398392209 is an apocalyptic number.

It is an amenable number.

189398392209 is a deficient number, since it is larger than the sum of its proper divisors (112871642991).

189398392209 is a wasteful number, since it uses less digits than its factorization.

189398392209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171382 (or 171376 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 63.

It can be divided in two parts, 18939 and 8392209, that added together give a palindrome (8411148).

The spelling of 189398392209 in words is "one hundred eighty-nine billion, three hundred ninety-eight million, three hundred ninety-two thousand, two hundred nine".