189808423 has 16 divisors (see below), whose sum is σ = 232657920. Its totient is φ = 151216416.

The previous prime is 189808403. The next prime is 189808427. The reversal of 189808423 is 324808981.

It is a cyclic number.

It is not a de Polignac number, because 189808423 - 2⁹ = 189807911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189808423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189808427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6415 + ... + 20512.

It is an arithmetic number, because the mean of its divisors is an integer number (14541120).

Almost surely, 2^189808423 is an apocalyptic number.

189808423 is a deficient number, since it is larger than the sum of its proper divisors (42849497).

189808423 is a wasteful number, since it uses less digits than its factorization.

189808423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27006.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 189808423 is about 13777.0977713015. The cubic root of 189808423 is about 574.6964224859.

The spelling of 189808423 in words is "one hundred eighty-nine million, eight hundred eight thousand, four hundred twenty-three".