6438527956 has 12 divisors (see below), whose sum is σ = 12877055968. Its totient is φ = 2759369112.

The previous prime is 6438527941. The next prime is 6438527957. The reversal of 6438527956 is 6597258346.

6438527956 is an admirable number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6438527897 and 6438527906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438527957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114973686 + ... + 114973741.

Almost surely, 2^6438527956 is an apocalyptic number.

It is an amenable number.

6438527956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6438527956 is a wasteful number, since it uses less digits than its factorization.

6438527956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229947438 (or 229947436 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 55.

The square root of 6438527956 is about 80240.4384085730. The cubic root of 6438527956 is about 1860.3537266131.

The spelling of 6438527956 in words is "six billion, four hundred thirty-eight million, five hundred twenty-seven thousand, nine hundred fifty-six".