18828878289 has 12 divisors (see below), whose sum is σ = 27184890096. Its totient is φ = 11587001712.

The previous prime is 18828878281. The next prime is 18828878347. The reversal of 18828878289 is 98287882881.

It is not a de Polignac number, because 18828878289 - 2³ = 18828878281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18828878281) 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, 18568407 + ... + 18569420.

It is an arithmetic number, because the mean of its divisors is an integer number (2265407508).

Almost surely, 2^18828878289 is an apocalyptic number.

It is an amenable number.

18828878289 is a deficient number, since it is larger than the sum of its proper divisors (8356011807).

18828878289 is a wasteful number, since it uses less digits than its factorization.

18828878289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37137856 (or 37137843 counting only the distinct ones).

The product of its digits is 66060288, while the sum is 69.

The spelling of 18828878289 in words is "eighteen billion, eight hundred twenty-eight million, eight hundred seventy-eight thousand, two hundred eighty-nine".