16189345 has 4 divisors (see below), whose sum is σ = 19427220. Its totient is φ = 12951472.

The previous prime is 16189343. The next prime is 16189361. The reversal of 16189345 is 54398161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9979281 + 6210064 = 3159^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 16189345 - 2¹ = 16189343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16189343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618930 + ... + 1618939.

It is an arithmetic number, because the mean of its divisors is an integer number (4856805).

Almost surely, 2^16189345 is an apocalyptic number.

It is an amenable number.

16189345 is a deficient number, since it is larger than the sum of its proper divisors (3237875).

16189345 is an equidigital number, since it uses as much as digits as its factorization.

16189345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237874.

The product of its digits is 25920, while the sum is 37.

The square root of 16189345 is about 4023.5985137685. The cubic root of 16189345 is about 252.9743135040.

The spelling of 16189345 in words is "sixteen million, one hundred eighty-nine thousand, three hundred forty-five".