6378381606 has 32 divisors (see below), whose sum is σ = 13510614240. Its totient is φ = 2000549376.

The previous prime is 6378381547. The next prime is 6378381649. The reversal of 6378381606 is 6061838736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691980 + ... + 701136.

It is an arithmetic number, because the mean of its divisors is an integer number (422206695).

Almost surely, 2^6378381606 is an apocalyptic number.

6378381606 is an abundant number, since it is smaller than the sum of its proper divisors (7132232634).

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

6378381606 is a wasteful number, since it uses less digits than its factorization.

6378381606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16008.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 6378381606 is about 79864.7707440521. The cubic root of 6378381606 is about 1854.5426815392.

The spelling of 6378381606 in words is "six billion, three hundred seventy-eight million, three hundred eighty-one thousand, six hundred six".