2056381660 has 24 divisors (see below), whose sum is σ = 4319441280. Its totient is φ = 822354624.

The previous prime is 2056381651. The next prime is 2056381681. The reversal of 2056381660 is 661836502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95842 + ... + 115318.

It is an arithmetic number, because the mean of its divisors is an integer number (179976720).

Almost surely, 2^2056381660 is an apocalyptic number.

2056381660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2056381660 is an abundant number, since it is smaller than the sum of its proper divisors (2263059620).

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

2056381660 is a wasteful number, since it uses less digits than its factorization.

2056381660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24765 (or 24763 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2056381660 is about 45347.3445749583. The cubic root of 2056381660 is about 1271.6509127032.

The spelling of 2056381660 in words is "two billion, fifty-six million, three hundred eighty-one thousand, six hundred sixty".