18135124 has 48 divisors (see below), whose sum is σ = 39674880. Its totient is φ = 7073280.

The previous prime is 18135119. The next prime is 18135137. The reversal of 18135124 is 42153181.

It is a congruent 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, 14142 + ... + 15370.

It is an arithmetic number, because the mean of its divisors is an integer number (826560).

Almost surely, 2^18135124 is an apocalyptic number.

18135124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18135124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19837440).

18135124 is an abundant number, since it is smaller than the sum of its proper divisors (21539756).

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

18135124 is a wasteful number, since it uses less digits than its factorization.

18135124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1286 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 18135124 is about 4258.5354289943. The cubic root of 18135124 is about 262.7282924052.

The spelling of 18135124 in words is "eighteen million, one hundred thirty-five thousand, one hundred twenty-four".