18163130 has 32 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 7074432.

The previous prime is 18163121. The next prime is 18163141. The reversal of 18163130 is 3136181.

It is a junction number, because it is equal to n+sod(n) for n = 18163096 and 18163105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101381 + ... + 101559.

It is an arithmetic number, because the mean of its divisors is an integer number (1048950).

Almost surely, 2^18163130 is an apocalyptic number.

18163130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18163130 is a deficient number, since it is larger than the sum of its proper divisors (15403270).

18163130 is a wasteful number, since it uses less digits than its factorization.

18163130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 18163130 is about 4261.8223801562. The cubic root of 18163130 is about 262.8634662659.

The spelling of 18163130 in words is "eighteen million, one hundred sixty-three thousand, one hundred thirty".