18122652 has 18 divisors (see below), whose sum is σ = 45810128. Its totient is φ = 6040872.

The previous prime is 18122641. The next prime is 18122659. The reversal of 18122652 is 25622181.

It is a happy number.

18122652 is a `hidden beast` number, since 1 + 8 + 1 + 2 + 2 + 652 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18122659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251668 + ... + 251739.

Almost surely, 2^18122652 is an apocalyptic number.

18122652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18122652 is an abundant number, since it is smaller than the sum of its proper divisors (27687476).

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

18122652 is a wasteful number, since it uses less digits than its factorization.

18122652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503417 (or 503412 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 18122652 is about 4257.0708239352. The cubic root of 18122652 is about 262.6680502159.

The spelling of 18122652 in words is "eighteen million, one hundred twenty-two thousand, six hundred fifty-two".