6436486789 has 16 divisors (see below), whose sum is σ = 6619392000. Its totient is φ = 6256586160.

The previous prime is 6436486757. The next prime is 6436486801. The reversal of 6436486789 is 9876846346.

It is a cyclic number.

It is not a de Polignac number, because 6436486789 - 2⁵ = 6436486757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6436486289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2144712 + ... + 2147710.

It is an arithmetic number, because the mean of its divisors is an integer number (413712000).

Almost surely, 2^6436486789 is an apocalyptic number.

It is an amenable number.

6436486789 is a deficient number, since it is larger than the sum of its proper divisors (182905211).

6436486789 is a wasteful number, since it uses less digits than its factorization.

6436486789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480.

The product of its digits is 41803776, while the sum is 61.

The square root of 6436486789 is about 80227.7183335037. The cubic root of 6436486789 is about 1860.1571136601.

The spelling of 6436486789 in words is "six billion, four hundred thirty-six million, four hundred eighty-six thousand, seven hundred eighty-nine".