18020063 has 8 divisors (see below), whose sum is σ = 18858336. Its totient is φ = 17186400.

The previous prime is 18020059. The next prime is 18020077. The reversal of 18020063 is 36002081.

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 18020063 - 2² = 18020059 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 (18020263) 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, 8753 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (2357292).

Almost surely, 2^18020063 is an apocalyptic number.

18020063 is a deficient number, since it is larger than the sum of its proper divisors (838273).

18020063 is a wasteful number, since it uses less digits than its factorization.

18020063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18020063 is about 4245.0044758516. The cubic root of 18020063 is about 262.1714735159.

The spelling of 18020063 in words is "eighteen million, twenty thousand, sixty-three".