18975723 has 16 divisors (see below), whose sum is σ = 28850976. Its totient is φ = 10990080.

The previous prime is 18975707. The next prime is 18975731. The reversal of 18975723 is 32757981.

It is not a de Polignac number, because 18975723 - 2⁴ = 18975707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18975703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13648 + ... + 14973.

It is an arithmetic number, because the mean of its divisors is an integer number (1803186).

Almost surely, 2^18975723 is an apocalyptic number.

18975723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18975723 is a deficient number, since it is larger than the sum of its proper divisors (9875253).

18975723 is a wasteful number, since it uses less digits than its factorization.

18975723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28654.

The product of its digits is 105840, while the sum is 42.

The square root of 18975723 is about 4356.1132905378. The cubic root of 18975723 is about 266.7264659295.

The spelling of 18975723 in words is "eighteen million, nine hundred seventy-five thousand, seven hundred twenty-three".