18105038 has 16 divisors (see below), whose sum is σ = 31138944. Its totient is φ = 7733880.

The previous prime is 18105013. The next prime is 18105041. The reversal of 18105038 is 83050181.

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 = 18104998 and 18105016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2681 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1946184).

Almost surely, 2^18105038 is an apocalyptic number.

18105038 is a deficient number, since it is larger than the sum of its proper divisors (13033906).

18105038 is a wasteful number, since it uses less digits than its factorization.

18105038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 18105038 is about 4255.0015276143. The cubic root of 18105038 is about 262.5829240660.

The spelling of 18105038 in words is "eighteen million, one hundred five thousand, thirty-eight".