18030803 has 16 divisors (see below), whose sum is σ = 21669120. Its totient is φ = 14678496.

The previous prime is 18030767. The next prime is 18030811. The reversal of 18030803 is 30803081.

It is not a de Polignac number, because 18030803 - 2⁶ = 18030739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18030853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10328 + ... + 11946.

It is an arithmetic number, because the mean of its divisors is an integer number (1354320).

Almost surely, 2^18030803 is an apocalyptic number.

18030803 is a deficient number, since it is larger than the sum of its proper divisors (3638317).

18030803 is a wasteful number, since it uses less digits than its factorization.

18030803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 18030803 is about 4246.2693037536. The cubic root of 18030803 is about 262.2235481103.

Adding to 18030803 its reverse (30803081), we get a palindrome (48833884).

The spelling of 18030803 in words is "eighteen million, thirty thousand, eight hundred three".