3146561856 has 56 divisors (see below), whose sum is σ = 9250314240. Its totient is φ = 1048853376.

The previous prime is 3146561843. The next prime is 3146561879. The reversal of 3146561856 is 6581656413.

3146561856 is a `hidden beast` number, since 3 + 1 + 4 + 6 + 561 + 85 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908736 + ... + 912191.

Almost surely, 2^3146561856 is an apocalyptic number.

3146561856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3146561856 is an abundant number, since it is smaller than the sum of its proper divisors (6103752384).

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

3146561856 is a wasteful number, since it uses less digits than its factorization.

3146561856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820948 (or 1820932 counting only the distinct ones).

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

The square root of 3146561856 is about 56094.2230180613. The cubic root of 3146561856 is about 1465.3636850189.

The spelling of 3146561856 in words is "three billion, one hundred forty-six million, five hundred sixty-one thousand, eight hundred fifty-six".