6378188940 has 48 divisors (see below), whose sum is σ = 19843256160. Its totient is φ = 1700850240.

The previous prime is 6378188897. The next prime is 6378188941. The reversal of 6378188940 is 498818736.

6378188940 is a `hidden beast` number, since 6 + 378 + 188 + 94 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (6378188941) 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, 5905191 + ... + 5906270.

It is an arithmetic number, because the mean of its divisors is an integer number (413401170).

Almost surely, 2^6378188940 is an apocalyptic number.

6378188940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6378188940 is an abundant number, since it is smaller than the sum of its proper divisors (13465067220).

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

6378188940 is a wasteful number, since it uses less digits than its factorization.

6378188940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11811479 (or 11811471 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 6378188940 is about 79863.5645335218. The cubic root of 6378188940 is about 1854.5240085205.

The spelling of 6378188940 in words is "six billion, three hundred seventy-eight million, one hundred eighty-eight thousand, nine hundred forty".