18853956 has 72 divisors (see below), whose sum is σ = 53149824. Its totient is φ = 5586240.

The previous prime is 18853943. The next prime is 18853957. The reversal of 18853956 is 65935881.

It is not an unprimeable number, because it can be changed into a prime (18853957) 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 23 ways as a sum of consecutive naturals, for example, 18106 + ... + 19118.

It is an arithmetic number, because the mean of its divisors is an integer number (738192).

Almost surely, 2^18853956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18853956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26574912).

18853956 is an abundant number, since it is smaller than the sum of its proper divisors (34295868).

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

18853956 is a wasteful number, since it uses less digits than its factorization.

18853956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1076 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 18853956 is about 4342.1142315697. The cubic root of 18853956 is about 266.1547142996.

The spelling of 18853956 in words is "eighteen million, eight hundred fifty-three thousand, nine hundred fifty-six".