18159852 has 12 divisors (see below), whose sum is σ = 42373016. Its totient is φ = 6053280.

The previous prime is 18159851. The next prime is 18159863. The reversal of 18159852 is 25895181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18159852.

It is not an unprimeable number, because it can be changed into a prime (18159851) 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, 756649 + ... + 756672.

Almost surely, 2^18159852 is an apocalyptic number.

18159852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18159852 is an abundant number, since it is smaller than the sum of its proper divisors (24213164).

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

18159852 is a wasteful number, since it uses less digits than its factorization.

18159852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513328 (or 1513326 counting only the distinct ones).

The product of its digits is 28800, while the sum is 39.

The square root of 18159852 is about 4261.4377855367. The cubic root of 18159852 is about 262.8476518425.

The spelling of 18159852 in words is "eighteen million, one hundred fifty-nine thousand, eight hundred fifty-two".