16109806 has 4 divisors (see below), whose sum is σ = 24164712. Its totient is φ = 8054902.

The previous prime is 16109791. The next prime is 16109809. The reversal of 16109806 is 60890161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60890161 = 1217 ⋅50033.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16109809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4027450 + ... + 4027453.

It is an arithmetic number, because the mean of its divisors is an integer number (6041178).

Almost surely, 2^16109806 is an apocalyptic number.

16109806 is a deficient number, since it is larger than the sum of its proper divisors (8054906).

16109806 is an equidigital number, since it uses as much as digits as its factorization.

16109806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054905.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 16109806 is about 4013.7022809371. The cubic root of 16109806 is about 252.5593416714.

Adding to 16109806 its reverse (60890161), we get a palindrome (76999967).

The spelling of 16109806 in words is "sixteen million, one hundred nine thousand, eight hundred six".