18548089 has 4 divisors (see below), whose sum is σ = 21197824. Its totient is φ = 15898356.

The previous prime is 18548069. The next prime is 18548107. The reversal of 18548089 is 98084581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18548089 - 2⁷ = 18547961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18548069) 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, 1324857 + ... + 1324870.

It is an arithmetic number, because the mean of its divisors is an integer number (5299456).

Almost surely, 2^18548089 is an apocalyptic number.

It is an amenable number.

18548089 is a deficient number, since it is larger than the sum of its proper divisors (2649735).

18548089 is an equidigital number, since it uses as much as digits as its factorization.

18548089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649734.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 18548089 is about 4306.7492381145. The cubic root of 18548089 is about 264.7075877469.

The spelling of 18548089 in words is "eighteen million, five hundred forty-eight thousand, eighty-nine".