18305038 has 8 divisors (see below), whose sum is σ = 27729720. Its totient is φ = 9061800.

The previous prime is 18305029. The next prime is 18305041. The reversal of 18305038 is 83050381.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 18304997 and 18305015.

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, 45108 + ... + 45511.

It is an arithmetic number, because the mean of its divisors is an integer number (3466215).

Almost surely, 2^18305038 is an apocalyptic number.

18305038 is a deficient number, since it is larger than the sum of its proper divisors (9424682).

18305038 is a wasteful number, since it uses less digits than its factorization.

18305038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90722.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18305038 is about 4278.4387339309. The cubic root of 18305038 is about 263.5462726006.

The spelling of 18305038 in words is "eighteen million, three hundred five thousand, thirty-eight".