6398733996 has 30 divisors (see below), whose sum is σ = 16727555460. Its totient is φ = 2132911224.

The previous prime is 6398733983. The next prime is 6398733997. The reversal of 6398733996 is 6993378936.

It is a super-2 number, since 2×6398733996² = 81887593503132256032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6398733997) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9874266 + ... + 9874913.

It is an arithmetic number, because the mean of its divisors is an integer number (557585182).

Almost surely, 2^6398733996 is an apocalyptic number.

It is an amenable number.

6398733996 is an abundant number, since it is smaller than the sum of its proper divisors (10328821464).

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

6398733996 is a wasteful number, since it uses less digits than its factorization.

6398733996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19749195 (or 19749184 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 63.

The square root of 6398733996 is about 79992.0870836610. The cubic root of 6398733996 is about 1856.5131030797.

The spelling of 6398733996 in words is "six billion, three hundred ninety-eight million, seven hundred thirty-three thousand, nine hundred ninety-six".