18231148 has 24 divisors (see below), whose sum is σ = 34531280. Its totient is φ = 8372160.

The previous prime is 18231137. The next prime is 18231151. The reversal of 18231148 is 84113281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11143 + ... + 12673.

Almost surely, 2^18231148 is an apocalyptic number.

It is an amenable number.

18231148 is a deficient number, since it is larger than the sum of its proper divisors (16300132).

18231148 is a wasteful number, since it uses less digits than its factorization.

18231148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1775 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 18231148 is about 4269.7948428467. The cubic root of 18231148 is about 263.1911846532.

The spelling of 18231148 in words is "eighteen million, two hundred thirty-one thousand, one hundred forty-eight".