2057961985 has 8 divisors (see below), whose sum is σ = 2469799656. Its totient is φ = 1646206080.

The previous prime is 2057961959. The next prime is 2057962019. The reversal of 2057961985 is 5891697502.

It can be written as a sum of positive squares in 4 ways, for example, as 838276209 + 1219685776 = 28953^2 + 34924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2057961985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78325 + ... + 101245.

It is an arithmetic number, because the mean of its divisors is an integer number (308724957).

Almost surely, 2^2057961985 is an apocalyptic number.

It is an amenable number.

2057961985 is a deficient number, since it is larger than the sum of its proper divisors (411837671).

2057961985 is a wasteful number, since it uses less digits than its factorization.

2057961985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40883.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The square root of 2057961985 is about 45364.7658982166. The cubic root of 2057961985 is about 1271.9765829797.

The spelling of 2057961985 in words is "two billion, fifty-seven million, nine hundred sixty-one thousand, nine hundred eighty-five".