3837856856 has 8 divisors (see below), whose sum is σ = 7195981620. Its totient is φ = 1918928424.

The previous prime is 3837856853. The next prime is 3837856877. The reversal of 3837856856 is 6586587383.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 3837856795 and 3837856804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3837856853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239866046 + ... + 239866061.

Almost surely, 2^3837856856 is an apocalyptic number.

It is an amenable number.

3837856856 is a deficient number, since it is larger than the sum of its proper divisors (3358124764).

3837856856 is a wasteful number, since it uses less digits than its factorization.

3837856856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479732113 (or 479732109 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 59.

The square root of 3837856856 is about 61950.4387070826. The cubic root of 3837856856 is about 1565.6556784657.

The spelling of 3837856856 in words is "three billion, eight hundred thirty-seven million, eight hundred fifty-six thousand, eight hundred fifty-six".