18545142 has 64 divisors (see below), whose sum is σ = 46738944. Its totient is φ = 4765440.

The previous prime is 18545117. The next prime is 18545143. The reversal of 18545142 is 24154581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18545143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63148 + ... + 63440.

It is an arithmetic number, because the mean of its divisors is an integer number (730296).

Almost surely, 2^18545142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18545142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23369472).

18545142 is an abundant number, since it is smaller than the sum of its proper divisors (28193802).

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

18545142 is a wasteful number, since it uses less digits than its factorization.

18545142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 6400, while the sum is 30.

The square root of 18545142 is about 4306.4070871203. The cubic root of 18545142 is about 264.6935677118.

It can be divided in two parts, 1854 and 5142, that added together give a palindrome (6996).

The spelling of 18545142 in words is "eighteen million, five hundred forty-five thousand, one hundred forty-two".