18379205 has 16 divisors (see below), whose sum is σ = 23916144. Its totient is φ = 13478400.

The previous prime is 18379201. The next prime is 18379211. The reversal of 18379205 is 50297381.

It can be written as a sum of positive squares in 8 ways, for example, as 5541316 + 12837889 = 2354^2 + 3583^2 .

It is not a de Polignac number, because 18379205 - 2² = 18379201 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 (18379201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9305 + ... + 11105.

It is an arithmetic number, because the mean of its divisors is an integer number (1494759).

Almost surely, 2^18379205 is an apocalyptic number.

It is an amenable number.

18379205 is a deficient number, since it is larger than the sum of its proper divisors (5536939).

18379205 is a wasteful number, since it uses less digits than its factorization.

18379205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 18379205 is about 4287.0975029733. The cubic root of 18379205 is about 263.9017320599.

The spelling of 18379205 in words is "eighteen million, three hundred seventy-nine thousand, two hundred five".