18163330 has 32 divisors (see below), whose sum is σ = 34401024. Its totient is φ = 6891456.

The previous prime is 18163279. The next prime is 18163331. The reversal of 18163330 is 3336181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18163295 and 18163304.

It is not an unprimeable number, because it can be changed into a prime (18163331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35859 + ... + 36361.

It is an arithmetic number, because the mean of its divisors is an integer number (1075032).

Almost surely, 2^18163330 is an apocalyptic number.

18163330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18163330 is a deficient number, since it is larger than the sum of its proper divisors (16237694).

18163330 is a wasteful number, since it uses less digits than its factorization.

18163330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 18163330 is about 4261.8458442323. The cubic root of 18163330 is about 262.8644310867.

The spelling of 18163330 in words is "eighteen million, one hundred sixty-three thousand, three hundred thirty".