18005822 has 16 divisors (see below), whose sum is σ = 28676592. Its totient is φ = 8449920.

The previous prime is 18005821. The next prime is 18005843. The reversal of 18005822 is 22850081.

It is a junction number, because it is equal to n+sod(n) for n = 18005791 and 18005800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21797 + ... + 22607.

It is an arithmetic number, because the mean of its divisors is an integer number (1792287).

Almost surely, 2^18005822 is an apocalyptic number.

18005822 is a deficient number, since it is larger than the sum of its proper divisors (10670770).

18005822 is a wasteful number, since it uses less digits than its factorization.

18005822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18005822 is about 4243.3267609271. The cubic root of 18005822 is about 262.1023918499.

The spelling of 18005822 in words is "eighteen million, five thousand, eight hundred twenty-two".