2059811857 has 4 divisors (see below), whose sum is σ = 2076030976. Its totient is φ = 2043592740.

The previous prime is 2059811839. The next prime is 2059811863. The reversal of 2059811857 is 7581189502.

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-2059811857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2059811657) 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, 8109369 + ... + 8109622.

It is an arithmetic number, because the mean of its divisors is an integer number (519007744).

Almost surely, 2^2059811857 is an apocalyptic number.

It is an amenable number.

2059811857 is a deficient number, since it is larger than the sum of its proper divisors (16219119).

2059811857 is a wasteful number, since it uses less digits than its factorization.

2059811857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16219118.

The product of its (nonzero) digits is 201600, while the sum is 46.

The square root of 2059811857 is about 45385.1501815296. The cubic root of 2059811857 is about 1272.3575892391.

The spelling of 2059811857 in words is "two billion, fifty-nine million, eight hundred eleven thousand, eight hundred fifty-seven".