16044691 has 16 divisors (see below), whose sum is σ = 17802400. Its totient is φ = 14455584.

The previous prime is 16044689. The next prime is 16044703. The reversal of 16044691 is 19644061.

It is not a de Polignac number, because 16044691 - 2¹ = 16044689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16044601) 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 15 ways as a sum of consecutive naturals, for example, 147145 + ... + 147253.

It is an arithmetic number, because the mean of its divisors is an integer number (1112650).

Almost surely, 2^16044691 is an apocalyptic number.

16044691 is a deficient number, since it is larger than the sum of its proper divisors (1757709).

16044691 is an equidigital number, since it uses as much as digits as its factorization.

16044691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16044691 is about 4005.5824794903. The cubic root of 16044691 is about 252.2186049264.

The spelling of 16044691 in words is "sixteen million, forty-four thousand, six hundred ninety-one".