16834109 has 4 divisors (see below), whose sum is σ = 17110140. Its totient is φ = 16558080.

The previous prime is 16834099. The next prime is 16834127. The reversal of 16834109 is 90143861.

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: 90143861 = 29 ⋅3108409.

It can be written as a sum of positive squares in 2 ways, for example, as 1452025 + 15382084 = 1205^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 16834109 - 2²⁴ = 56893 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 (16834159) 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, 137924 + ... + 138045.

It is an arithmetic number, because the mean of its divisors is an integer number (4277535).

Almost surely, 2^16834109 is an apocalyptic number.

It is an amenable number.

16834109 is a deficient number, since it is larger than the sum of its proper divisors (276031).

16834109 is an equidigital number, since it uses as much as digits as its factorization.

16834109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276030.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 16834109 is about 4102.9390685215. The cubic root of 16834109 is about 256.2890462808.

The spelling of 16834109 in words is "sixteen million, eight hundred thirty-four thousand, one hundred nine".