18121179 has 8 divisors (see below), whose sum is σ = 24675840. Its totient is φ = 11823656.

The previous prime is 18121163. The next prime is 18121211. The reversal of 18121179 is 97112181.

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

It is a cyclic number.

It is not a de Polignac number, because 18121179 - 2⁴ = 18121163 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (18121979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64119 + ... + 64400.

It is an arithmetic number, because the mean of its divisors is an integer number (3084480).

Almost surely, 2^18121179 is an apocalyptic number.

18121179 is a deficient number, since it is larger than the sum of its proper divisors (6554661).

18121179 is a wasteful number, since it uses less digits than its factorization.

18121179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128569.

The product of its digits is 1008, while the sum is 30.

The square root of 18121179 is about 4256.8978141365. The cubic root of 18121179 is about 262.6609335143.

The spelling of 18121179 in words is "eighteen million, one hundred twenty-one thousand, one hundred seventy-nine".