18163733 has 8 divisors (see below), whose sum is σ = 20943168. Its totient is φ = 15430464.

The previous prime is 18163723. The next prime is 18163757. The reversal of 18163733 is 33736181.

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

It is not a de Polignac number, because 18163733 - 2⁶ = 18163669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18163733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18163723) 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, 10691 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (2617896).

Almost surely, 2^18163733 is an apocalyptic number.

It is an amenable number.

18163733 is a deficient number, since it is larger than the sum of its proper divisors (2779435).

18163733 is a wasteful number, since it uses less digits than its factorization.

18163733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23083.

The product of its digits is 9072, while the sum is 32.

The square root of 18163733 is about 4261.8931239533. The cubic root of 18163733 is about 262.8663751793.

The spelling of 18163733 in words is "eighteen million, one hundred sixty-three thousand, seven hundred thirty-three".