16923189 has 8 divisors (see below), whose sum is σ = 22584160. Its totient is φ = 11272176.

The previous prime is 16923163. The next prime is 16923191. The reversal of 16923189 is 98132961.

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

It is not a de Polignac number, because 16923189 - 2⁹ = 16922677 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 (16923139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3627 + ... + 6855.

It is an arithmetic number, because the mean of its divisors is an integer number (2823020).

Almost surely, 2^16923189 is an apocalyptic number.

It is an amenable number.

16923189 is a deficient number, since it is larger than the sum of its proper divisors (5660971).

16923189 is a wasteful number, since it uses less digits than its factorization.

16923189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979.

The product of its digits is 23328, while the sum is 39.

The square root of 16923189 is about 4113.7803781923. The cubic root of 16923189 is about 256.7403141293.

Subtracting from 16923189 its product of digits (23328), we obtain a palindrome (16899861).

The spelling of 16923189 in words is "sixteen million, nine hundred twenty-three thousand, one hundred eighty-nine".