18140484 has 24 divisors (see below), whose sum is σ = 42410368. Its totient is φ = 6035040.

The previous prime is 18140467. The next prime is 18140489. The reversal of 18140484 is 48404181.

It is not an unprimeable number, because it can be changed into a prime (18140489) 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, 6789 + ... + 9075.

Almost surely, 2^18140484 is an apocalyptic number.

It is an amenable number.

18140484 is an abundant number, since it is smaller than the sum of its proper divisors (24269884).

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

18140484 is a wasteful number, since it uses less digits than its factorization.

18140484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955 (or 2953 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 18140484 is about 4259.1647068410. The cubic root of 18140484 is about 262.7541737636.

The spelling of 18140484 in words is "eighteen million, one hundred forty thousand, four hundred eighty-four".