18119890803 has 16 divisors (see below), whose sum is σ = 27616977920. Its totient is φ = 10352079936.

The previous prime is 18119890799. The next prime is 18119890813. The reversal of 18119890803 is 30809891181.

It is not a de Polignac number, because 18119890803 - 2² = 18119890799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18119890813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17526 + ... + 191172.

It is an arithmetic number, because the mean of its divisors is an integer number (1726061120).

Almost surely, 2^18119890803 is an apocalyptic number.

18119890803 is a deficient number, since it is larger than the sum of its proper divisors (9497087117).

18119890803 is a wasteful number, since it uses less digits than its factorization.

18119890803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178626.

The product of its (nonzero) digits is 124416, while the sum is 48.

The spelling of 18119890803 in words is "eighteen billion, one hundred nineteen million, eight hundred ninety thousand, eight hundred three".