18888986289 has 16 divisors (see below), whose sum is σ = 25489330560. Its totient is φ = 12440883840.

The previous prime is 18888986273. The next prime is 18888986299. The reversal of 18888986289 is 98268988881.

It is not a de Polignac number, because 18888986289 - 2⁴ = 18888986273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18888986289.

It is not an unprimeable number, because it can be changed into a prime (18888986209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301684 + ... + 358874.

It is an arithmetic number, because the mean of its divisors is an integer number (1593083160).

Almost surely, 2^18888986289 is an apocalyptic number.

It is an amenable number.

18888986289 is a deficient number, since it is larger than the sum of its proper divisors (6600344271).

18888986289 is a wasteful number, since it uses less digits than its factorization.

18888986289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58520.

The product of its digits is 254803968, while the sum is 75.

The spelling of 18888986289 in words is "eighteen billion, eight hundred eighty-eight million, nine hundred eighty-six thousand, two hundred eighty-nine".