6344974818 has 216 divisors, whose sum is σ = 17642252628. Its totient is φ = 1633492224.

The previous prime is 6344974793. The next prime is 6344974897. The reversal of 6344974818 is 8184794436.

It can be written as a sum of positive squares in 6 ways, for example, as 5239877769 + 1105097049 = 72387^2 + 33243^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 32207896 + ... + 32208092.

Almost surely, 2^6344974818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6344974818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8821126314).

6344974818 is an abundant number, since it is smaller than the sum of its proper divisors (11297277810).

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

6344974818 is a wasteful number, since it uses less digits than its factorization.

6344974818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 275 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 6344974818 is about 79655.3502157890. The cubic root of 6344974818 is about 1851.2992886845.

The spelling of 6344974818 in words is "six billion, three hundred forty-four million, nine hundred seventy-four thousand, eight hundred eighteen".