16926109 has 4 divisors (see below), whose sum is σ = 17116380. Its totient is φ = 16735840.

The previous prime is 16926103. The next prime is 16926113. The reversal of 16926109 is 90162961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7022500 + 9903609 = 2650^2 + 3147^2 .

It is a cyclic number.

It is not a de Polignac number, because 16926109 - 2⁷ = 16925981 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 (16926103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95002 + ... + 95179.

It is an arithmetic number, because the mean of its divisors is an integer number (4279095).

Almost surely, 2^16926109 is an apocalyptic number.

It is an amenable number.

16926109 is a deficient number, since it is larger than the sum of its proper divisors (190271).

16926109 is an equidigital number, since it uses as much as digits as its factorization.

16926109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190270.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 16926109 is about 4114.1352675866. The cubic root of 16926109 is about 256.7550796404.

The spelling of 16926109 in words is "sixteen million, nine hundred twenty-six thousand, one hundred nine".