18090430803 has 12 divisors (see below), whose sum is σ = 27505918440. Its totient is φ = 11425535136.

The previous prime is 18090430793. The next prime is 18090430817. The reversal of 18090430803 is 30803409081.

It is not a de Polignac number, because 18090430803 - 2⁶ = 18090430739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18090430873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52895826 + ... + 52896167.

It is an arithmetic number, because the mean of its divisors is an integer number (2292159870).

Almost surely, 2^18090430803 is an apocalyptic number.

18090430803 is a deficient number, since it is larger than the sum of its proper divisors (9415487637).

18090430803 is a wasteful number, since it uses less digits than its factorization.

18090430803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105792018 (or 105792015 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

Adding to 18090430803 its reverse (30803409081), we get a palindrome (48893839884).

The spelling of 18090430803 in words is "eighteen billion, ninety million, four hundred thirty thousand, eight hundred three".