16385994 has 24 divisors (see below), whose sum is σ = 37592100. Its totient is φ = 5140608.

The previous prime is 16385969. The next prime is 16386001. The reversal of 16385994 is 49958361.

It is a happy number.

16385994 is a `hidden beast` number, since 1 + 638 + 5 + 9 + 9 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15705369 + 680625 = 3963^2 + 825^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26469 + ... + 27080.

Almost surely, 2^16385994 is an apocalyptic number.

16385994 is an abundant number, since it is smaller than the sum of its proper divisors (21206106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16385994 is a wasteful number, since it uses less digits than its factorization.

16385994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53574 (or 53571 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 16385994 is about 4047.9617093051. The cubic root of 16385994 is about 253.9944715353.

The spelling of 16385994 in words is "sixteen million, three hundred eighty-five thousand, nine hundred ninety-four".