18144002 has 8 divisors (see below), whose sum is σ = 27622416. Its totient is φ = 8936532.

The previous prime is 18144001. The next prime is 18144011. The reversal of 18144002 is 20044181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18144001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67568 + ... + 67835.

It is an arithmetic number, because the mean of its divisors is an integer number (3452802).

Almost surely, 2^18144002 is an apocalyptic number.

18144002 is a deficient number, since it is larger than the sum of its proper divisors (9478414).

18144002 is a wasteful number, since it uses less digits than its factorization.

18144002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135472.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 18144002 is about 4259.5776785968. The cubic root of 18144002 is about 262.7711580483.

Adding to 18144002 its reverse (20044181), we get a palindrome (38188183).

The spelling of 18144002 in words is "eighteen million, one hundred forty-four thousand, two".