18050803 has 4 divisors (see below), whose sum is σ = 18068848. Its totient is φ = 18032760.

The previous prime is 18050801. The next prime is 18050807. The reversal of 18050803 is 30805081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30805081 = 541 ⋅56941.

It is a cyclic number.

It is not a de Polignac number, because 18050803 - 2¹ = 18050801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18050801) 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, 7428 + ... + 9553.

It is an arithmetic number, because the mean of its divisors is an integer number (4517212).

Almost surely, 2^18050803 is an apocalyptic number.

18050803 is a deficient number, since it is larger than the sum of its proper divisors (18045).

18050803 is a wasteful number, since it uses less digits than its factorization.

18050803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18044.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18050803 is about 4248.6236594926. The cubic root of 18050803 is about 262.3204662024.

Adding to 18050803 its reverse (30805081), we get a palindrome (48855884).

The spelling of 18050803 in words is "eighteen million, fifty thousand, eight hundred three".