18234563 has 8 divisors (see below), whose sum is σ = 18500832. Its totient is φ = 17970496.

The previous prime is 18234553. The next prime is 18234571. The reversal of 18234563 is 36543281.

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 18234563 - 2⁶ = 18234499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18234553) 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, 22481 + ... + 23277.

It is an arithmetic number, because the mean of its divisors is an integer number (2312604).

Almost surely, 2^18234563 is an apocalyptic number.

18234563 is a deficient number, since it is larger than the sum of its proper divisors (266269).

18234563 is a wasteful number, since it uses less digits than its factorization.

18234563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101.

The product of its digits is 17280, while the sum is 32.

The square root of 18234563 is about 4270.1947262391. The cubic root of 18234563 is about 263.2076170025.

The spelling of 18234563 in words is "eighteen million, two hundred thirty-four thousand, five hundred sixty-three".