16164644 has 12 divisors (see below), whose sum is σ = 28320768. Its totient is φ = 8073000.

The previous prime is 16164623. The next prime is 16164647. The reversal of 16164644 is 44646161.

It is a super-2 number, since 2×16164644² = 522591431293472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16164644.

It is not an unprimeable number, because it can be changed into a prime (16164647) 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, 2849 + ... + 6359.

It is an arithmetic number, because the mean of its divisors is an integer number (2360064).

Almost surely, 2^16164644 is an apocalyptic number.

It is an amenable number.

16164644 is a deficient number, since it is larger than the sum of its proper divisors (12156124).

16164644 is a wasteful number, since it uses less digits than its factorization.

16164644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 4664 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 16164644 is about 4020.5278260447. The cubic root of 16164644 is about 252.8455889381.

The spelling of 16164644 in words is "sixteen million, one hundred sixty-four thousand, six hundred forty-four".