18982915289 has 32 divisors (see below), whose sum is σ = 21870777600. Its totient is φ = 16341481728.

The previous prime is 18982915277. The next prime is 18982915291. The reversal of 18982915289 is 98251928981.

It is a de Polignac number, because none of the positive numbers 2^k-18982915289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18982911289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2579387 + ... + 2586735.

It is an arithmetic number, because the mean of its divisors is an integer number (683461800).

Almost surely, 2^18982915289 is an apocalyptic number.

It is an amenable number.

18982915289 is a deficient number, since it is larger than the sum of its proper divisors (2887862311).

18982915289 is a wasteful number, since it uses less digits than its factorization.

18982915289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601.

The product of its digits is 7464960, while the sum is 62.

The spelling of 18982915289 in words is "eighteen billion, nine hundred eighty-two million, nine hundred fifteen thousand, two hundred eighty-nine".