18505484 has 12 divisors (see below), whose sum is σ = 32423664. Its totient is φ = 9241584.

The previous prime is 18505483. The next prime is 18505489. The reversal of 18505484 is 48450581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18505483) 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, 1769 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (2701972).

Almost surely, 2^18505484 is an apocalyptic number.

It is an amenable number.

18505484 is a deficient number, since it is larger than the sum of its proper divisors (13918180).

18505484 is a wasteful number, since it uses less digits than its factorization.

18505484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5584 (or 5582 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 18505484 is about 4301.8000883351. The cubic root of 18505484 is about 264.5047544001.

The spelling of 18505484 in words is "eighteen million, five hundred five thousand, four hundred eighty-four".