6386813420 has 96 divisors (see below), whose sum is σ = 15110903808. Its totient is φ = 2249862912.

The previous prime is 6386813401. The next prime is 6386813441. The reversal of 6386813420 is 243186836.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2791517 + ... + 2793803.

It is an arithmetic number, because the mean of its divisors is an integer number (157405248).

Almost surely, 2^6386813420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6386813420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7555451904).

6386813420 is an abundant number, since it is smaller than the sum of its proper divisors (8724090388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6386813420 is a wasteful number, since it uses less digits than its factorization.

6386813420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799 (or 2797 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 6386813420 is about 79917.5413785985. The cubic root of 6386813420 is about 1855.3595174560.

The spelling of 6386813420 in words is "six billion, three hundred eighty-six million, eight hundred thirteen thousand, four hundred twenty".