18048911 has 4 divisors (see below), whose sum is σ = 18113424. Its totient is φ = 17984400.

The previous prime is 18048907. The next prime is 18048937. The reversal of 18048911 is 11984081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11984081 = 23 ⋅521047.

It is a cyclic number.

It is not a de Polignac number, because 18048911 - 2² = 18048907 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18048211) 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, 31835 + ... + 32396.

It is an arithmetic number, because the mean of its divisors is an integer number (4528356).

Almost surely, 2^18048911 is an apocalyptic number.

18048911 is a deficient number, since it is larger than the sum of its proper divisors (64513).

18048911 is an equidigital number, since it uses as much as digits as its factorization.

18048911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64512.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 18048911 is about 4248.4009933150. The cubic root of 18048911 is about 262.3113008177.

The spelling of 18048911 in words is "eighteen million, forty-eight thousand, nine hundred eleven".