6386347956 has 12 divisors (see below), whose sum is σ = 14901478592. Its totient is φ = 2128782648.

The previous prime is 6386347951. The next prime is 6386347997. The reversal of 6386347956 is 6597436836.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 6386347896 and 6386347905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6386347951) 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, 266097820 + ... + 266097843.

Almost surely, 2^6386347956 is an apocalyptic number.

It is an amenable number.

6386347956 is an abundant number, since it is smaller than the sum of its proper divisors (8515130636).

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

6386347956 is a wasteful number, since it uses less digits than its factorization.

6386347956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532195670 (or 532195668 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 57.

The square root of 6386347956 is about 79914.6291738878. The cubic root of 6386347956 is about 1855.3144441679.

The spelling of 6386347956 in words is "six billion, three hundred eighty-six million, three hundred forty-seven thousand, nine hundred fifty-six".