16128199 has 4 divisors (see below), whose sum is σ = 16150936. Its totient is φ = 16105464.

The previous prime is 16128197. The next prime is 16128227. The reversal of 16128199 is 99182161.

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 16128199 - 2¹ = 16128197 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 (16128197) 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, 10269 + ... + 11734.

It is an arithmetic number, because the mean of its divisors is an integer number (4037734).

Almost surely, 2^16128199 is an apocalyptic number.

16128199 is a deficient number, since it is larger than the sum of its proper divisors (22737).

16128199 is an equidigital number, since it uses as much as digits as its factorization.

16128199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22736.

The product of its digits is 7776, while the sum is 37.

The square root of 16128199 is about 4015.9929033802. The cubic root of 16128199 is about 252.6554230517.

The spelling of 16128199 in words is "sixteen million, one hundred twenty-eight thousand, one hundred ninety-nine".