18855952 has 20 divisors (see below), whose sum is σ = 38122560. Its totient is φ = 9017888.

The previous prime is 18855937. The next prime is 18855953. The reversal of 18855952 is 25955881.

It is a junction number, because it is equal to n+sod(n) for n = 18855899 and 18855908.

It is not an unprimeable number, because it can be changed into a prime (18855953) 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 3 ways as a sum of consecutive naturals, for example, 25252 + ... + 25987.

It is an arithmetic number, because the mean of its divisors is an integer number (1906128).

Almost surely, 2^18855952 is an apocalyptic number.

It is an amenable number.

18855952 is an abundant number, since it is smaller than the sum of its proper divisors (19266608).

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

18855952 is a wasteful number, since it uses less digits than its factorization.

18855952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51270 (or 51264 counting only the distinct ones).

The product of its digits is 144000, while the sum is 43.

The square root of 18855952 is about 4342.3440674364. The cubic root of 18855952 is about 266.1641062466.

The spelling of 18855952 in words is "eighteen million, eight hundred fifty-five thousand, nine hundred fifty-two".