6490163556 has 36 divisors (see below), whose sum is σ = 17013311952. Its totient is φ = 2163387528.

The previous prime is 6490163531. The next prime is 6490163569. The reversal of 6490163556 is 6553610946.

6490163556 is a `hidden beast` number, since 6 + 4 + 9 + 0 + 1 + 635 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3337590 + ... + 3339533.

Almost surely, 2^6490163556 is an apocalyptic number.

It is an amenable number.

6490163556 is an abundant number, since it is smaller than the sum of its proper divisors (10523148396).

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

6490163556 is a wasteful number, since it uses less digits than its factorization.

6490163556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677142 (or 6677128 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 6490163556 is about 80561.5513505047. The cubic root of 6490163556 is about 1865.3137021872.

The spelling of 6490163556 in words is "six billion, four hundred ninety million, one hundred sixty-three thousand, five hundred fifty-six".