18898512903 has 12 divisors (see below), whose sum is σ = 28035632248. Its totient is φ = 12258494640.

The previous prime is 18898512883. The next prime is 18898512917. The reversal of 18898512903 is 30921589881.

It is not a de Polignac number, because 18898512903 - 2¹³ = 18898504711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18898512903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18898512923) 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, 28375813 + ... + 28376478.

Almost surely, 2^18898512903 is an apocalyptic number.

18898512903 is a deficient number, since it is larger than the sum of its proper divisors (9137119345).

18898512903 is a wasteful number, since it uses less digits than its factorization.

18898512903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56752334 (or 56752331 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 18898512903 in words is "eighteen billion, eight hundred ninety-eight million, five hundred twelve thousand, nine hundred three".