2059309891 has 2 divisors, whose sum is σ = 2059309892. Its totient is φ = 2059309890.

The previous prime is 2059309873. The next prime is 2059309897. The reversal of 2059309891 is 1989039502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2059309891 - 2¹⁷ = 2059178819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2059309897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1029654945 + 1029654946.

It is an arithmetic number, because the mean of its divisors is an integer number (1029654946).

Almost surely, 2^2059309891 is an apocalyptic number.

2059309891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2059309891 is an equidigital number, since it uses as much as digits as its factorization.

2059309891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 2059309891 is about 45379.6197758421. The cubic root of 2059309891 is about 1272.2542250838.

The spelling of 2059309891 in words is "two billion, fifty-nine million, three hundred nine thousand, eight hundred ninety-one".