16418109 has 16 divisors (see below), whose sum is σ = 23256000. Its totient is φ = 10273536.

The previous prime is 16418093. The next prime is 16418117. The reversal of 16418109 is 90181461.

It is not a de Polignac number, because 16418109 - 2⁴ = 16418093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16418009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5167 + ... + 7715.

It is an arithmetic number, because the mean of its divisors is an integer number (1453500).

Almost surely, 2^16418109 is an apocalyptic number.

16418109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16418109 is a deficient number, since it is larger than the sum of its proper divisors (6837891).

16418109 is a wasteful number, since it uses less digits than its factorization.

16418109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 16418109 is about 4051.9265788017. The cubic root of 16418109 is about 254.1602983026.

The spelling of 16418109 in words is "sixteen million, four hundred eighteen thousand, one hundred nine".