18003802 has 8 divisors (see below), whose sum is σ = 28179936. Its totient is φ = 8610492.

The previous prime is 18003787. The next prime is 18003803. The reversal of 18003802 is 20830081.

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 (18003803) by changing a digit.

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, 195648 + ... + 195739.

It is an arithmetic number, because the mean of its divisors is an integer number (3522492).

Almost surely, 2^18003802 is an apocalyptic number.

18003802 is a deficient number, since it is larger than the sum of its proper divisors (10176134).

18003802 is a wasteful number, since it uses less digits than its factorization.

18003802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391412.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 18003802 is about 4243.0887334582. The cubic root of 18003802 is about 262.0925900826.

Adding to 18003802 its reverse (20830081), we get a palindrome (38833883).

The spelling of 18003802 in words is "eighteen million, three thousand, eight hundred two".