18119205 has 48 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 8717184.

The previous prime is 18119201. The next prime is 18119207. The reversal of 18119205 is 50291181.

It is not a de Polignac number, because 18119205 - 2² = 18119201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119201) 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 47 ways as a sum of consecutive naturals, for example, 27166 + ... + 27824.

It is an arithmetic number, because the mean of its divisors is an integer number (720720).

Almost surely, 2^18119205 is an apocalyptic number.

18119205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18119205 is a deficient number, since it is larger than the sum of its proper divisors (16475355).

18119205 is a wasteful number, since it uses less digits than its factorization.

18119205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 18119205 is about 4256.6659488384. The cubic root of 18119205 is about 262.6513956597.

The spelling of 18119205 in words is "eighteen million, one hundred nineteen thousand, two hundred five".