18822918 has 16 divisors (see below), whose sum is σ = 37748736. Its totient is φ = 6257160.

The previous prime is 18822917. The next prime is 18822959. The reversal of 18822918 is 81922881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18822917) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1798 + ... + 6393.

It is an arithmetic number, because the mean of its divisors is an integer number (2359296).

Almost surely, 2^18822918 is an apocalyptic number.

18822918 is an abundant number, since it is smaller than the sum of its proper divisors (18925818).

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

18822918 is a wasteful number, since it uses less digits than its factorization.

18822918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8579.

The product of its digits is 18432, while the sum is 39.

The square root of 18822918 is about 4338.5386940766. The cubic root of 18822918 is about 266.0085832118.

The spelling of 18822918 in words is "eighteen million, eight hundred twenty-two thousand, nine hundred eighteen".