2851688489 has 8 divisors (see below), whose sum is σ = 3083902080. Its totient is φ = 2621311056.

The previous prime is 2851688471. The next prime is 2851688509. The reversal of 2851688489 is 9848861582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2851688489 - 2¹² = 2851684393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2851688689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455807 + ... + 462020.

It is an arithmetic number, because the mean of its divisors is an integer number (385487760).

Almost surely, 2^2851688489 is an apocalyptic number.

It is an amenable number.

2851688489 is a deficient number, since it is larger than the sum of its proper divisors (232213591).

2851688489 is a wasteful number, since it uses less digits than its factorization.

2851688489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918079.

The product of its digits is 8847360, while the sum is 59.

The square root of 2851688489 is about 53401.2030669722. The cubic root of 2851688489 is about 1418.0798766775.

The spelling of 2851688489 in words is "two billion, eight hundred fifty-one million, six hundred eighty-eight thousand, four hundred eighty-nine".