6398468730 has 96 divisors (see below), whose sum is σ = 16948767888. Its totient is φ = 1674316800.

The previous prime is 6398468729. The next prime is 6398468731. The reversal of 6398468730 is 378648936.

6398468730 is a `hidden beast` number, since 63 + 98 + 468 + 7 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (6398468729) and next prime (6398468731).

It can be written as a sum of positive squares in 8 ways, for example, as 1262309841 + 5136158889 = 35529^2 + 71667^2 .

It is a super-3 number, since 3×6398468730³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6398468731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2859172 + ... + 2861408.

Almost surely, 2^6398468730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6398468730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8474383944).

6398468730 is an abundant number, since it is smaller than the sum of its proper divisors (10550299158).

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

6398468730 is a wasteful number, since it uses less digits than its factorization.

6398468730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The square root of 6398468730 is about 79990.4289899735. The cubic root of 6398468730 is about 1856.4874481814.

The spelling of 6398468730 in words is "six billion, three hundred ninety-eight million, four hundred sixty-eight thousand, seven hundred thirty".