18397852 has 48 divisors (see below), whose sum is σ = 37699200. Its totient is φ = 7767360.

The previous prime is 18397829. The next prime is 18397853. The reversal of 18397852 is 25879381.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18397799 and 18397808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18397853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49138 + ... + 49510.

It is an arithmetic number, because the mean of its divisors is an integer number (785400).

Almost surely, 2^18397852 is an apocalyptic number.

It is an amenable number.

18397852 is an abundant number, since it is smaller than the sum of its proper divisors (19301348).

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

18397852 is a wasteful number, since it uses less digits than its factorization.

18397852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 464 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 18397852 is about 4289.2717330568. The cubic root of 18397852 is about 263.9909508683.

The spelling of 18397852 in words is "eighteen million, three hundred ninety-seven thousand, eight hundred fifty-two".