2056149859 has 2 divisors, whose sum is σ = 2056149860. Its totient is φ = 2056149858.

The previous prime is 2056149857. The next prime is 2056149917. The reversal of 2056149859 is 9589416502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2056149859 - 2¹ = 2056149857 is a prime.

Together with 2056149857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2056149857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028074929 + 1028074930.

It is an arithmetic number, because the mean of its divisors is an integer number (1028074930).

Almost surely, 2^2056149859 is an apocalyptic number.

2056149859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056149859 is an equidigital number, since it uses as much as digits as its factorization.

2056149859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 49.

The square root of 2056149859 is about 45344.7886641894. The cubic root of 2056149859 is about 1271.6031295775.

The spelling of 2056149859 in words is "two billion, fifty-six million, one hundred forty-nine thousand, eight hundred fifty-nine".