18079663 has 8 divisors (see below), whose sum is σ = 20704032. Its totient is φ = 15465696.

The previous prime is 18079627. The next prime is 18079667. The reversal of 18079663 is 36697081.

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 18079663 - 2¹⁷ = 17948591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581 + ... + 6217.

It is an arithmetic number, because the mean of its divisors is an integer number (2588004).

Almost surely, 2^18079663 is an apocalyptic number.

18079663 is a deficient number, since it is larger than the sum of its proper divisors (2624369).

18079663 is an equidigital number, since it uses as much as digits as its factorization.

18079663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 18079663 is about 4252.0186970426. The cubic root of 18079663 is about 262.4601929055.

The spelling of 18079663 in words is "eighteen million, seventy-nine thousand, six hundred sixty-three".