18723063 has 4 divisors (see below), whose sum is σ = 24964088. Its totient is φ = 12482040.

The previous prime is 18723053. The next prime is 18723109. The reversal of 18723063 is 36032781.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18723063 - 2¹⁴ = 18706679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18723063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18723013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3120508 + ... + 3120513.

It is an arithmetic number, because the mean of its divisors is an integer number (6241022).

Almost surely, 2^18723063 is an apocalyptic number.

18723063 is a deficient number, since it is larger than the sum of its proper divisors (6241025).

18723063 is an equidigital number, since it uses as much as digits as its factorization.

18723063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6241024.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 18723063 is about 4327.0154841415. The cubic root of 18723063 is about 265.5373598393.

The spelling of 18723063 in words is "eighteen million, seven hundred twenty-three thousand, sixty-three".