18153012 has 12 divisors (see below), whose sum is σ = 42357056. Its totient is φ = 6051000.

The previous prime is 18152971. The next prime is 18153041. The reversal of 18153012 is 21035181.

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 18153012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756364 + ... + 756387.

Almost surely, 2^18153012 is an apocalyptic number.

18153012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18153012 is an abundant number, since it is smaller than the sum of its proper divisors (24204044).

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

18153012 is a wasteful number, since it uses less digits than its factorization.

18153012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512758 (or 1512756 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 18153012 is about 4260.6351639163. The cubic root of 18153012 is about 262.8146467330.

Adding to 18153012 its reverse (21035181), we get a palindrome (39188193).

The spelling of 18153012 in words is "eighteen million, one hundred fifty-three thousand, twelve".