18383109 has 4 divisors (see below), whose sum is σ = 24510816. Its totient is φ = 12255404.

The previous prime is 18383081. The next prime is 18383119. The reversal of 18383109 is 90138381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18383109 - 2⁵ = 18383077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18383109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18383119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063849 + ... + 3063854.

It is an arithmetic number, because the mean of its divisors is an integer number (6127704).

Almost surely, 2^18383109 is an apocalyptic number.

It is an amenable number.

18383109 is a deficient number, since it is larger than the sum of its proper divisors (6127707).

18383109 is an equidigital number, since it uses as much as digits as its factorization.

18383109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6127706.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 18383109 is about 4287.5527985087. The cubic root of 18383109 is about 263.9204162090.

The spelling of 18383109 in words is "eighteen million, three hundred eighty-three thousand, one hundred nine".