18133822 has 48 divisors (see below), whose sum is σ = 33619968. Its totient is φ = 7302960.

The previous prime is 18133813. The next prime is 18133877. The reversal of 18133822 is 22833181.

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 23 ways as a sum of consecutive naturals, for example, 142723 + ... + 142849.

It is an arithmetic number, because the mean of its divisors is an integer number (700416).

Almost surely, 2^18133822 is an apocalyptic number.

18133822 is a deficient number, since it is larger than the sum of its proper divisors (15486146).

18133822 is a wasteful number, since it uses less digits than its factorization.

18133822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 214 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 18133822 is about 4258.3825567931. The cubic root of 18133822 is about 262.7220047830.

The spelling of 18133822 in words is "eighteen million, one hundred thirty-three thousand, eight hundred twenty-two".