16385638 has 16 divisors (see below), whose sum is σ = 26766000. Its totient is φ = 7493472.

The previous prime is 16385617. The next prime is 16385647. The reversal of 16385638 is 83658361.

16385638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 16385638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6333 + ... + 8536.

It is an arithmetic number, because the mean of its divisors is an integer number (1672875).

Almost surely, 2^16385638 is an apocalyptic number.

16385638 is a deficient number, since it is larger than the sum of its proper divisors (10380362).

16385638 is a wasteful number, since it uses less digits than its factorization.

16385638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14919.

The product of its digits is 103680, while the sum is 40.

The square root of 16385638 is about 4047.9177363183. The cubic root of 16385638 is about 253.9926321049.

The spelling of 16385638 in words is "sixteen million, three hundred eighty-five thousand, six hundred thirty-eight".