189340805 has 8 divisors (see below), whose sum is σ = 227830272. Its totient is φ = 151058448.

The previous prime is 189340771. The next prime is 189340831. The reversal of 189340805 is 508043981.

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 189340805 - 2¹⁰ = 189339781 is a prime.

It is a Duffinian number.

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, 49757 + ... + 53426.

It is an arithmetic number, because the mean of its divisors is an integer number (28478784).

Almost surely, 2^189340805 is an apocalyptic number.

It is an amenable number.

189340805 is a deficient number, since it is larger than the sum of its proper divisors (38489467).

189340805 is a wasteful number, since it uses less digits than its factorization.

189340805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103555.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 189340805 is about 13760.1164602630. The cubic root of 189340805 is about 574.2240876604.

The spelling of 189340805 in words is "one hundred eighty-nine million, three hundred forty thousand, eight hundred five".