2057994843 has 4 divisors (see below), whose sum is σ = 2743993128. Its totient is φ = 1371996560.

The previous prime is 2057994839. The next prime is 2057994893. The reversal of 2057994843 is 3484997502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2057994843 - 2² = 2057994839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2057994893) 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, 342999138 + ... + 342999143.

It is an arithmetic number, because the mean of its divisors is an integer number (685998282).

Almost surely, 2^2057994843 is an apocalyptic number.

2057994843 is a deficient number, since it is larger than the sum of its proper divisors (685998285).

2057994843 is an equidigital number, since it uses as much as digits as its factorization.

2057994843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685998284.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 2057994843 is about 45365.1280500783. The cubic root of 2057994843 is about 1271.9833525223.

The spelling of 2057994843 in words is "two billion, fifty-seven million, nine hundred ninety-four thousand, eight hundred forty-three".