2164307342891 has 2 divisors, whose sum is σ = 2164307342892. Its totient is φ = 2164307342890.

The previous prime is 2164307342831. The next prime is 2164307342947. The reversal of 2164307342891 is 1982437034612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164307342891 - 2¹⁴ = 2164307326507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2164307342831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082153671445 + 1082153671446.

It is an arithmetic number, because the mean of its divisors is an integer number (1082153671446).

Almost surely, 2^{2164307342891} is an apocalyptic number.

2164307342891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164307342891 is an equidigital number, since it uses as much as digits as its factorization.

2164307342891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 2164307342891 in words is "two trillion, one hundred sixty-four billion, three hundred seven million, three hundred forty-two thousand, eight hundred ninety-one".