16321849 has 4 divisors (see below), whose sum is σ = 16333540. Its totient is φ = 16310160.

The previous prime is 16321843. The next prime is 16321871. The reversal of 16321849 is 94812361.

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 8369449 + 7952400 = 2893^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 16321849 - 2¹¹ = 16319801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16321843) 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, 3414 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (4083385).

Almost surely, 2^16321849 is an apocalyptic number.

It is an amenable number.

16321849 is a deficient number, since it is larger than the sum of its proper divisors (11691).

16321849 is a wasteful number, since it uses less digits than its factorization.

16321849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11690.

The product of its digits is 10368, while the sum is 34.

The square root of 16321849 is about 4040.0308167141. The cubic root of 16321849 is about 253.6626071929.

It can be divided in two parts, 1632 and 1849, that added together give a square (3481 = 59²).

The spelling of 16321849 in words is "sixteen million, three hundred twenty-one thousand, eight hundred forty-nine".