18057923 has 16 divisors (see below), whose sum is σ = 21184800. Its totient is φ = 15240960.

The previous prime is 18057911. The next prime is 18057929. The reversal of 18057923 is 32975081.

It is a cyclic number.

It is not a de Polignac number, because 18057923 - 2⁸ = 18057667 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18057929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5903 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (1324050).

Almost surely, 2^18057923 is an apocalyptic number.

18057923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18057923 is a deficient number, since it is larger than the sum of its proper divisors (3126877).

18057923 is a wasteful number, since it uses less digits than its factorization.

18057923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 18057923 is about 4249.4614952956. The cubic root of 18057923 is about 262.3549517634.

The spelling of 18057923 in words is "eighteen million, fifty-seven thousand, nine hundred twenty-three".