18421182 has 40 divisors (see below), whose sum is σ = 44457336. Its totient is φ = 5667408.

The previous prime is 18421129. The next prime is 18421201. The reversal of 18421182 is 28112481.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2268 + ... + 6479.

Almost surely, 2^18421182 is an apocalyptic number.

18421182 is an abundant number, since it is smaller than the sum of its proper divisors (26036154).

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

18421182 is a wasteful number, since it uses less digits than its factorization.

18421182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8774 (or 8765 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 18421182 is about 4291.9904473333. The cubic root of 18421182 is about 264.1024911970.

The spelling of 18421182 in words is "eighteen million, four hundred twenty-one thousand, one hundred eighty-two".