18048018 has 16 divisors (see below), whose sum is σ = 36531936. Its totient is φ = 5943360.

The previous prime is 18048013. The next prime is 18048029. The reversal of 18048018 is 81084081.

It is not an unprimeable number, because it can be changed into a prime (18048013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17623 + ... + 18618.

It is an arithmetic number, because the mean of its divisors is an integer number (2283246).

Almost surely, 2^18048018 is an apocalyptic number.

18048018 is an abundant number, since it is smaller than the sum of its proper divisors (18483918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18048018 is a wasteful number, since it uses less digits than its factorization.

18048018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36329.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 18048018 is about 4248.2958936496. The cubic root of 18048018 is about 262.3069746498.

The spelling of 18048018 in words is "eighteen million, forty-eight thousand, eighteen".