18307934 has 8 divisors (see below), whose sum is σ = 27809760. Its totient is φ = 9038016.

The previous prime is 18307907. The next prime is 18307937. The reversal of 18307934 is 43970381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18307894 and 18307903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18307937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57779 + ... + 58094.

It is an arithmetic number, because the mean of its divisors is an integer number (3476220).

Almost surely, 2^18307934 is an apocalyptic number.

18307934 is a deficient number, since it is larger than the sum of its proper divisors (9501826).

18307934 is a wasteful number, since it uses less digits than its factorization.

18307934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115954.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 18307934 is about 4278.7771617601. Note that the first 3 decimals coincide. The cubic root of 18307934 is about 263.5601702274.

The spelling of 18307934 in words is "eighteen million, three hundred seven thousand, nine hundred thirty-four".