2057644841 has 4 divisors (see below), whose sum is σ = 2351594112. Its totient is φ = 1763695572.

The previous prime is 2057644789. The next prime is 2057644877. The reversal of 2057644841 is 1484467502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2057644841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2057644891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146974625 + ... + 146974638.

It is an arithmetic number, because the mean of its divisors is an integer number (587898528).

Almost surely, 2^2057644841 is an apocalyptic number.

It is an amenable number.

2057644841 is a deficient number, since it is larger than the sum of its proper divisors (293949271).

2057644841 is an equidigital number, since it uses as much as digits as its factorization.

2057644841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293949270.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 2057644841 is about 45361.2702754233. The cubic root of 2057644841 is about 1271.9112399416.

The spelling of 2057644841 in words is "two billion, fifty-seven million, six hundred forty-four thousand, eight hundred forty-one".