18318063 has 8 divisors (see below), whose sum is σ = 24571008. Its totient is φ = 12138584.

The previous prime is 18318049. The next prime is 18318073. The reversal of 18318063 is 36081381.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18318063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18318063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18318023) 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, 17781 + ... + 18782.

It is an arithmetic number, because the mean of its divisors is an integer number (3071376).

Almost surely, 2^18318063 is an apocalyptic number.

18318063 is a deficient number, since it is larger than the sum of its proper divisors (6252945).

18318063 is a wasteful number, since it uses less digits than its factorization.

18318063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36733.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18318063 is about 4279.9606306601. The cubic root of 18318063 is about 263.6087668047.

The spelling of 18318063 in words is "eighteen million, three hundred eighteen thousand, sixty-three".