18048609 has 16 divisors (see below), whose sum is σ = 26821440. Its totient is φ = 11995200.

The previous prime is 18048601. The next prime is 18048649. The reversal of 18048609 is 90684081.

It is a happy number.

18048609 is a `hidden beast` number, since 1 + 8 + 0 + 48 + 609 = 666.

It is not a de Polignac number, because 18048609 - 2³ = 18048601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18048601) 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, 9994 + ... + 11660.

It is an arithmetic number, because the mean of its divisors is an integer number (1676340).

Almost surely, 2^18048609 is an apocalyptic number.

It is an amenable number.

18048609 is a deficient number, since it is larger than the sum of its proper divisors (8772831).

18048609 is a wasteful number, since it uses less digits than its factorization.

18048609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077 (or 2071 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18048609 is about 4248.3654503821. The cubic root of 18048609 is about 262.3098377847.

The spelling of 18048609 in words is "eighteen million, forty-eight thousand, six hundred nine".