16189493 has 8 divisors (see below), whose sum is σ = 16936128. Its totient is φ = 15446464.

The previous prime is 16189477. The next prime is 16189499. The reversal of 16189493 is 39498161.

16189493 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 not a de Polignac number, because 16189493 - 2⁴ = 16189477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16189493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16189499) 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, 13046 + ... + 14232.

It is an arithmetic number, because the mean of its divisors is an integer number (2117016).

Almost surely, 2^16189493 is an apocalyptic number.

It is an amenable number.

16189493 is a deficient number, since it is larger than the sum of its proper divisors (746635).

16189493 is a wasteful number, since it uses less digits than its factorization.

16189493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803.

The product of its digits is 46656, while the sum is 41.

The square root of 16189493 is about 4023.6169052235. The cubic root of 16189493 is about 252.9750843831.

It can be divided in two parts, 1618 and 9493, that added together give a palindrome (11111).

The spelling of 16189493 in words is "sixteen million, one hundred eighty-nine thousand, four hundred ninety-three".