18352003 has 8 divisors (see below), whose sum is σ = 18714960. Its totient is φ = 17992800.

The previous prime is 18352001. The next prime is 18352021. The reversal of 18352003 is 30025381.

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

It is a cyclic number.

It is not a de Polignac number, because 18352003 - 2¹ = 18352001 is a prime.

It is a super-2 number, since 2×18352003² = 673592028224018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18352001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10176 + ... + 11842.

It is an arithmetic number, because the mean of its divisors is an integer number (2339370).

Almost surely, 2^18352003 is an apocalyptic number.

18352003 is a deficient number, since it is larger than the sum of its proper divisors (362957).

18352003 is a wasteful number, since it uses less digits than its factorization.

18352003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 18352003 is about 4283.9237855032. The cubic root of 18352003 is about 263.7714725374.

Adding to 18352003 its reverse (30025381), we get a palindrome (48377384).

The spelling of 18352003 in words is "eighteen million, three hundred fifty-two thousand, three".