18123484 has 6 divisors (see below), whose sum is σ = 31716104. Its totient is φ = 9061740.

The previous prime is 18123467. The next prime is 18123493. The reversal of 18123484 is 48432181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2265432 + ... + 2265439.

Almost surely, 2^18123484 is an apocalyptic number.

It is an amenable number.

18123484 is a deficient number, since it is larger than the sum of its proper divisors (13592620).

18123484 is a wasteful number, since it uses less digits than its factorization.

18123484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530875 (or 4530873 counting only the distinct ones).

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

The square root of 18123484 is about 4257.1685425879. The cubic root of 18123484 is about 262.6720697982.

The spelling of 18123484 in words is "eighteen million, one hundred twenty-three thousand, four hundred eighty-four".