18718952 has 64 divisors (see below), whose sum is σ = 42979200. Its totient is φ = 7464960.

The previous prime is 18718951. The next prime is 18718957. The reversal of 18718952 is 25981781.

It is not an unprimeable number, because it can be changed into a prime (18718951) 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 15 ways as a sum of consecutive naturals, for example, 77552 + ... + 77792.

It is an arithmetic number, because the mean of its divisors is an integer number (671550).

Almost surely, 2^18718952 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 18718952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21489600).

18718952 is an abundant number, since it is smaller than the sum of its proper divisors (24260248).

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

18718952 is a wasteful number, since it uses less digits than its factorization.

18718952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 342 counting only the distinct ones).

The product of its digits is 40320, while the sum is 41.

The square root of 18718952 is about 4326.5404193189. The cubic root of 18718952 is about 265.5179238458.

The spelling of 18718952 in words is "eighteen million, seven hundred eighteen thousand, nine hundred fifty-two".