18123448 has 32 divisors (see below), whose sum is σ = 40527360. Its totient is φ = 7428960.

The previous prime is 18123431. The next prime is 18123449. The reversal of 18123448 is 84432181.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123449) 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, 5748 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (1266480).

Almost surely, 2^18123448 is an apocalyptic number.

It is an amenable number.

18123448 is an abundant number, since it is smaller than the sum of its proper divisors (22403912).

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

18123448 is a wasteful number, since it uses less digits than its factorization.

18123448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14107 (or 14103 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 18123448 is about 4257.1643144234. The cubic root of 18123448 is about 262.6718958765.

The spelling of 18123448 in words is "eighteen million, one hundred twenty-three thousand, four hundred forty-eight".