18048131 has 4 divisors (see below), whose sum is σ = 18344064. Its totient is φ = 17752200.

The previous prime is 18048113. The next prime is 18048133. The reversal of 18048131 is 13184081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18048131 is a prime.

It is a super-2 number, since 2×18048131² = 651470065186322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18048131.

It is not an unprimeable number, because it can be changed into a prime (18048133) 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, 147875 + ... + 147996.

It is an arithmetic number, because the mean of its divisors is an integer number (4586016).

Almost surely, 2^18048131 is an apocalyptic number.

18048131 is a deficient number, since it is larger than the sum of its proper divisors (295933).

18048131 is an equidigital number, since it uses as much as digits as its factorization.

18048131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295932.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 18048131 is about 4248.3091930791. The cubic root of 18048131 is about 262.3075220899.

The spelling of 18048131 in words is "eighteen million, forty-eight thousand, one hundred thirty-one".