2057647149 has 12 divisors (see below), whose sum is σ = 2974011612. Its totient is φ = 1370908800.

The previous prime is 2057647147. The next prime is 2057647153. The reversal of 2057647149 is 9417467502.

2057647149 is a `hidden beast` number, since 2 + 0 + 576 + 4 + 71 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 571544649 + 1486102500 = 23907^2 + 38550^2 .

It is not a de Polignac number, because 2057647149 - 2¹ = 2057647147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057647147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55932 + ... + 85109.

It is an arithmetic number, because the mean of its divisors is an integer number (247834301).

Almost surely, 2^2057647149 is an apocalyptic number.

It is an amenable number.

2057647149 is a deficient number, since it is larger than the sum of its proper divisors (916364463).

2057647149 is a wasteful number, since it uses less digits than its factorization.

2057647149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142668 (or 142665 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 2057647149 is about 45361.2957156208. The cubic root of 2057647149 is about 1271.9117154966.

The spelling of 2057647149 in words is "two billion, fifty-seven million, six hundred forty-seven thousand, one hundred forty-nine".