6385810878 has 64 divisors (see below), whose sum is σ = 15036840000. Its totient is φ = 2001871872.

The previous prime is 6385810877. The next prime is 6385810891. The reversal of 6385810878 is 8780185836.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6385810877) 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, 2338618 + ... + 2341346.

It is an arithmetic number, because the mean of its divisors is an integer number (234950625).

Almost surely, 2^6385810878 is an apocalyptic number.

6385810878 is an abundant number, since it is smaller than the sum of its proper divisors (8651029122).

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

6385810878 is a wasteful number, since it uses less digits than its factorization.

6385810878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306 (or 5300 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The square root of 6385810878 is about 79911.2687798160. The cubic root of 6385810878 is about 1855.2624334041.

The spelling of 6385810878 in words is "six billion, three hundred eighty-five million, eight hundred ten thousand, eight hundred seventy-eight".