6378019902 has 48 divisors (see below), whose sum is σ = 14675178960. Its totient is φ = 1996275456.

The previous prime is 6378019889. The next prime is 6378019903. The reversal of 6378019902 is 2099108736.

6378019902 is a `hidden beast` number, since 637 + 8 + 0 + 1 + 9 + 9 + 0 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378019903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43873 + ... + 121164.

It is an arithmetic number, because the mean of its divisors is an integer number (305732895).

Almost surely, 2^6378019902 is an apocalyptic number.

6378019902 is an abundant number, since it is smaller than the sum of its proper divisors (8297159058).

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

6378019902 is a wasteful number, since it uses less digits than its factorization.

6378019902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165177 (or 165174 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 6378019902 is about 79862.5062341522. The cubic root of 6378019902 is about 1854.5076251970.

The spelling of 6378019902 in words is "six billion, three hundred seventy-eight million, nineteen thousand, nine hundred two".