18163038 has 16 divisors (see below), whose sum is σ = 38463120. Its totient is φ = 5698176.

The previous prime is 18163003. The next prime is 18163039. The reversal of 18163038 is 83036181.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18162996 and 18163014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18163039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88933 + ... + 89136.

It is an arithmetic number, because the mean of its divisors is an integer number (2403945).

Almost surely, 2^18163038 is an apocalyptic number.

18163038 is an abundant number, since it is smaller than the sum of its proper divisors (20300082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18163038 is a wasteful number, since it uses less digits than its factorization.

18163038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178091.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18163038 is about 4261.8115866378. The cubic root of 18163038 is about 262.8630224459.

The spelling of 18163038 in words is "eighteen million, one hundred sixty-three thousand, thirty-eight".