189005385407 has 8 divisors (see below), whose sum is σ = 197997787200. Its totient is φ = 180177981984.

The previous prime is 189005385379. The next prime is 189005385449. The reversal of 189005385407 is 704583500981.

189005385407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189005385407 - 2³² = 184710418111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189005385307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41247248 + ... + 41251829.

It is an arithmetic number, because the mean of its divisors is an integer number (24749723400).

Almost surely, 2^189005385407 is an apocalyptic number.

189005385407 is a deficient number, since it is larger than the sum of its proper divisors (8992401793).

189005385407 is an equidigital number, since it uses as much as digits as its factorization.

189005385407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82499185.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 189005385407 in words is "one hundred eighty-nine billion, five million, three hundred eighty-five thousand, four hundred seven".