18042192 has 90 divisors (see below), whose sum is σ = 58759818. Its totient is φ = 5152896.

The previous prime is 18042181. The next prime is 18042197. The reversal of 18042192 is 29124081.

It can be written as a sum of positive squares in only one way, i.e., 14930496 + 3111696 = 3864^2 + 1764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18042197) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5778 + ... + 8334.

Almost surely, 2^18042192 is an apocalyptic number.

18042192 is a gapful number since it is divisible by the number (12) 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 18042192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29379909).

18042192 is an abundant number, since it is smaller than the sum of its proper divisors (40717626).

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

18042192 is a wasteful number, since it uses less digits than its factorization.

18042192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2569 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18042192 is about 4247.6101516029. The cubic root of 18042192 is about 262.2787468984.

The spelling of 18042192 in words is "eighteen million, forty-two thousand, one hundred ninety-two".