6483920868 has 18 divisors (see below), whose sum is σ = 16389911174. Its totient is φ = 2161306944.

The previous prime is 6483920857. The next prime is 6483920881. The reversal of 6483920868 is 8680293846.

It can be written as a sum of positive squares in only one way, i.e., 6355597284 + 128323584 = 79722^2 + 11328^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90054421 + ... + 90054492.

Almost surely, 2^6483920868 is an apocalyptic number.

It is an amenable number.

6483920868 is an abundant number, since it is smaller than the sum of its proper divisors (9905990306).

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

6483920868 is a wasteful number, since it uses less digits than its factorization.

6483920868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180108923 (or 180108918 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The square root of 6483920868 is about 80522.7971943350. The cubic root of 6483920868 is about 1864.7154477735.

The spelling of 6483920868 in words is "six billion, four hundred eighty-three million, nine hundred twenty thousand, eight hundred sixty-eight".