189608405 has 8 divisors (see below), whose sum is σ = 260034432. Its totient is φ = 130017168.

The previous prime is 189608383. The next prime is 189608413. The reversal of 189608405 is 504806981.

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 189608405 - 2¹⁰ = 189607381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2708657 + ... + 2708726.

It is an arithmetic number, because the mean of its divisors is an integer number (32504304).

Almost surely, 2^189608405 is an apocalyptic number.

It is an amenable number.

189608405 is a deficient number, since it is larger than the sum of its proper divisors (70426027).

189608405 is an equidigital number, since it uses as much as digits as its factorization.

189608405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5417395.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 189608405 is about 13769.8367818940. The cubic root of 189608405 is about 574.4944819741.

The spelling of 189608405 in words is "one hundred eighty-nine million, six hundred eight thousand, four hundred five".