18603117873 has 12 divisors (see below), whose sum is σ = 28285442640. Its totient is φ = 11749337496.

The previous prime is 18603117773. The next prime is 18603117913. The reversal of 18603117873 is 37871130681.

It is not a de Polignac number, because 18603117873 - 2¹⁰ = 18603116849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18603117173) 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, 54394911 + ... + 54395252.

It is an arithmetic number, because the mean of its divisors is an integer number (2357120220).

Almost surely, 2^18603117873 is an apocalyptic number.

It is an amenable number.

18603117873 is a deficient number, since it is larger than the sum of its proper divisors (9682324767).

18603117873 is a wasteful number, since it uses less digits than its factorization.

18603117873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108790188 (or 108790185 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 18603117873 in words is "eighteen billion, six hundred three million, one hundred seventeen thousand, eight hundred seventy-three".