18816484 has 48 divisors (see below), whose sum is σ = 37231488. Its totient is φ = 8273408.

The previous prime is 18816463. The next prime is 18816503. The reversal of 18816484 is 48461881.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82779 + ... + 83005.

It is an arithmetic number, because the mean of its divisors is an integer number (775656).

Almost surely, 2^18816484 is an apocalyptic number.

It is an amenable number.

18816484 is a deficient number, since it is larger than the sum of its proper divisors (18415004).

18816484 is a wasteful number, since it uses less digits than its factorization.

18816484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 322 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 18816484 is about 4337.7971367965. The cubic root of 18816484 is about 265.9782709746.

The spelling of 18816484 in words is "eighteen million, eight hundred sixteen thousand, four hundred eighty-four".