18164325 has 24 divisors (see below), whose sum is σ = 30676608. Its totient is φ = 9479680.

The previous prime is 18164281. The next prime is 18164339. The reversal of 18164325 is 52346181.

It is not a de Polignac number, because 18164325 - 2⁶ = 18164261 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18164292 and 18164301.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 949 + ... + 6101.

It is an arithmetic number, because the mean of its divisors is an integer number (1278192).

Almost surely, 2^18164325 is an apocalyptic number.

18164325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18164325 is a deficient number, since it is larger than the sum of its proper divisors (12512283).

18164325 is a wasteful number, since it uses less digits than its factorization.

18164325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213 (or 5208 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 18164325 is about 4261.9625760910. The cubic root of 18164325 is about 262.8692309653.

The spelling of 18164325 in words is "eighteen million, one hundred sixty-four thousand, three hundred twenty-five".