3156641856 has 63 divisors (see below), whose sum is σ = 9051810573. Its totient is φ = 1051764480.

The previous prime is 3156641809. The next prime is 3156641857. The reversal of 3156641856 is 6581466513.

The square root of 3156641856 is 56184.

It is a perfect power (a square), and thus also a powerful number.

3156641856 is a `hidden beast` number, since 3 + 1 + 566 + 4 + 1 + 85 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2059707456 + 1096934400 = 45384^2 + 33120^2 .

It is a super-2 number, since 2×3156641856² = 19928775614102249472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3156641857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1347246 + ... + 1349586.

Almost surely, 2^3156641856 is an apocalyptic number.

3156641856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

3156641856 is the 56184-th square number.

It is an amenable number.

3156641856 is an abundant number, since it is smaller than the sum of its proper divisors (5895168717).

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

3156641856 is an frugal number, since it uses more digits than its factorization.

3156641856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700 (or 2346 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The cubic root of 3156641856 is about 1466.9267795780.

The spelling of 3156641856 in words is "three billion, one hundred fifty-six million, six hundred forty-one thousand, eight hundred fifty-six".