6403648164 has 48 divisors (see below), whose sum is σ = 15386155008. Its totient is φ = 2071381248.

The previous prime is 6403648133. The next prime is 6403648171. The reversal of 6403648164 is 4618463046.

It is a happy 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, 151224 + ... + 188880.

It is an arithmetic number, because the mean of its divisors is an integer number (320544896).

Almost surely, 2^6403648164 is an apocalyptic number.

It is an amenable number.

6403648164 is an abundant number, since it is smaller than the sum of its proper divisors (8982506844).

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

6403648164 is a wasteful number, since it uses less digits than its factorization.

6403648164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38084 (or 38082 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 6403648164 is about 80022.7977766336. The cubic root of 6403648164 is about 1856.9882430459.

The spelling of 6403648164 in words is "six billion, four hundred three million, six hundred forty-eight thousand, one hundred sixty-four".