6453974128 has 80 divisors (see below), whose sum is σ = 15034752000. Its totient is φ = 2625267456.

The previous prime is 6453974113. The next prime is 6453974159. The reversal of 6453974128 is 8214793546.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174793 + ... + 208471.

It is an arithmetic number, because the mean of its divisors is an integer number (187934400).

Almost surely, 2^6453974128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6453974128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7517376000).

6453974128 is an abundant number, since it is smaller than the sum of its proper divisors (8580777872).

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

6453974128 is a wasteful number, since it uses less digits than its factorization.

6453974128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33782 (or 33776 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 6453974128 is about 80336.6300513035. The cubic root of 6453974128 is about 1861.8402152176.

The spelling of 6453974128 in words is "six billion, four hundred fifty-three million, nine hundred seventy-four thousand, one hundred twenty-eight".