18305948 has 6 divisors (see below), whose sum is σ = 32035416. Its totient is φ = 9152972.

The previous prime is 18305939. The next prime is 18305971. The reversal of 18305948 is 84950381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2288240 + ... + 2288247.

It is an arithmetic number, because the mean of its divisors is an integer number (5339236).

Almost surely, 2^18305948 is an apocalyptic number.

It is an amenable number.

18305948 is a deficient number, since it is larger than the sum of its proper divisors (13729468).

18305948 is a wasteful number, since it uses less digits than its factorization.

18305948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576491 (or 4576489 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 18305948 is about 4278.5450798139. The cubic root of 18305948 is about 263.5506397614.

The spelling of 18305948 in words is "eighteen million, three hundred five thousand, nine hundred forty-eight".