18874182 has 32 divisors (see below), whose sum is σ = 42076800. Its totient is φ = 5609088.

The previous prime is 18874171. The next prime is 18874183. The reversal of 18874182 is 28147881.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18874182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2932 + ... + 6807.

It is an arithmetic number, because the mean of its divisors is an integer number (1314900).

Almost surely, 2^18874182 is an apocalyptic number.

18874182 is an abundant number, since it is smaller than the sum of its proper divisors (23202618).

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

18874182 is a wasteful number, since it uses less digits than its factorization.

18874182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9780.

The product of its digits is 28672, while the sum is 39.

The square root of 18874182 is about 4344.4426570045. The cubic root of 18874182 is about 266.2498547466.

The spelling of 18874182 in words is "eighteen million, eight hundred seventy-four thousand, one hundred eighty-two".