6408642916 has 27 divisors (see below), whose sum is σ = 12148134201. Its totient is φ = 2956874544.

The previous prime is 6408642887. The next prime is 6408642937. The reversal of 6408642916 is 6192468046.

The square root of 6408642916 is 80054.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 948024100 + 5460618816 = 30790^2 + 73896^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2079865 + ... + 2082943.

Almost surely, 2^6408642916 is an apocalyptic number.

6408642916 is the 80054-th square number.

It is an amenable number.

6408642916 is a deficient number, since it is larger than the sum of its proper divisors (5739491285).

6408642916 is an equidigital number, since it uses as much as digits as its factorization.

6408642916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6188 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The cubic root of 6408642916 is about 1857.4709254712.

The spelling of 6408642916 in words is "six billion, four hundred eight million, six hundred forty-two thousand, nine hundred sixteen".