6378394734 has 96 divisors (see below), whose sum is σ = 15606864000. Its totient is φ = 1944692064.

The previous prime is 6378394717. The next prime is 6378394751. The reversal of 6378394734 is 4374938736.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6378394717) and next prime (6378394751).

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255877 + ... + 279695.

It is an arithmetic number, because the mean of its divisors is an integer number (162571500).

Almost surely, 2^6378394734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6378394734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7803432000).

6378394734 is an abundant number, since it is smaller than the sum of its proper divisors (9228469266).

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

6378394734 is a wasteful number, since it uses less digits than its factorization.

6378394734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23884 (or 23872 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The square root of 6378394734 is about 79864.8529329392. The cubic root of 6378394734 is about 1854.5439538797.

The spelling of 6378394734 in words is "six billion, three hundred seventy-eight million, three hundred ninety-four thousand, seven hundred thirty-four".