18338734 has 8 divisors (see below), whose sum is σ = 27974520. Its totient is φ = 9013896.

The previous prime is 18338713. The next prime is 18338741. The reversal of 18338734 is 43783381.

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 = 18338693 and 18338702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77589 + ... + 77824.

It is an arithmetic number, because the mean of its divisors is an integer number (3496815).

Almost surely, 2^18338734 is an apocalyptic number.

18338734 is a deficient number, since it is larger than the sum of its proper divisors (9635786).

18338734 is a wasteful number, since it uses less digits than its factorization.

18338734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155474.

The product of its digits is 48384, while the sum is 37.

The square root of 18338734 is about 4282.3748084445. The cubic root of 18338734 is about 263.7078858808.

The spelling of 18338734 in words is "eighteen million, three hundred thirty-eight thousand, seven hundred thirty-four".