18090003899 has 18 divisors (see below), whose sum is σ = 19973408364. Its totient is φ = 16248776040.

The previous prime is 18090003847. The next prime is 18090003961. The reversal of 18090003899 is 99830009081.

It is not a de Polignac number, because 18090003899 - 2²⁰ = 18088955323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18090003499) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47730692 + ... + 47731070.

It is an arithmetic number, because the mean of its divisors is an integer number (1109633798).

Almost surely, 2^18090003899 is an apocalyptic number.

18090003899 is a deficient number, since it is larger than the sum of its proper divisors (1883404465).

18090003899 is an frugal number, since it uses more digits than its factorization.

18090003899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 18090003899 in words is "eighteen billion, ninety million, three thousand, eight hundred ninety-nine".