18130979 has 8 divisors (see below), whose sum is σ = 18694032. Its totient is φ = 17573760.

The previous prime is 18130967. The next prime is 18131011. The reversal of 18130979 is 97903181.

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 18130979 - 2¹² = 18126883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18130909) 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, 5327 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (2336754).

Almost surely, 2^18130979 is an apocalyptic number.

18130979 is a deficient number, since it is larger than the sum of its proper divisors (563053).

18130979 is a wasteful number, since it uses less digits than its factorization.

18130979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 18130979 is about 4258.0487315201. The cubic root of 18130979 is about 262.7082743130.

The spelling of 18130979 in words is "eighteen million, one hundred thirty thousand, nine hundred seventy-nine".