6378948887 has 4 divisors (see below), whose sum is σ = 6450622560. Its totient is φ = 6307275216.

The previous prime is 6378948883. The next prime is 6378948893. The reversal of 6378948887 is 7888498736.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6378948887 - 2² = 6378948883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378948883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35836703 + ... + 35836880.

It is an arithmetic number, because the mean of its divisors is an integer number (1612655640).

Almost surely, 2^6378948887 is an apocalyptic number.

6378948887 is a deficient number, since it is larger than the sum of its proper divisors (71673673).

6378948887 is an equidigital number, since it uses as much as digits as its factorization.

6378948887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71673672.

The product of its digits is 130056192, while the sum is 68.

The square root of 6378948887 is about 79868.3221746895. The cubic root of 6378948887 is about 1854.5976597299.

The spelling of 6378948887 in words is "six billion, three hundred seventy-eight million, nine hundred forty-eight thousand, eight hundred eighty-seven".