16244191 has 4 divisors (see below), whose sum is σ = 16426800. Its totient is φ = 16061584.

The previous prime is 16244177. The next prime is 16244203. The reversal of 16244191 is 19144261.

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

It is a cyclic number.

It is not a de Polignac number, because 16244191 - 2¹⁹ = 15719903 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 (16244101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91171 + ... + 91348.

It is an arithmetic number, because the mean of its divisors is an integer number (4106700).

Almost surely, 2^16244191 is an apocalyptic number.

16244191 is a deficient number, since it is larger than the sum of its proper divisors (182609).

16244191 is an equidigital number, since it uses as much as digits as its factorization.

16244191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182608.

The product of its digits is 1728, while the sum is 28.

The square root of 16244191 is about 4030.4082919724. The cubic root of 16244191 is about 253.2596655990.

The spelling of 16244191 in words is "sixteen million, two hundred forty-four thousand, one hundred ninety-one".