18051484 has 24 divisors (see below), whose sum is σ = 36490608. Its totient is φ = 7722240.

The previous prime is 18051479. The next prime is 18051491. The reversal of 18051484 is 48415081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11319 + ... + 12814.

It is an arithmetic number, because the mean of its divisors is an integer number (1520442).

Almost surely, 2^18051484 is an apocalyptic number.

It is an amenable number.

18051484 is an abundant number, since it is smaller than the sum of its proper divisors (18439124).

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

18051484 is a wasteful number, since it uses less digits than its factorization.

18051484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24165 (or 24163 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 18051484 is about 4248.7038023378. The cubic root of 18051484 is about 262.3237650029.

The spelling of 18051484 in words is "eighteen million, fifty-one thousand, four hundred eighty-four".