2064473891 has 2 divisors, whose sum is σ = 2064473892. Its totient is φ = 2064473890.

The previous prime is 2064473869. The next prime is 2064473893. The reversal of 2064473891 is 1983744602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2064473891 is a prime.

Together with 2064473893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2064473893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032236945 + 1032236946.

It is an arithmetic number, because the mean of its divisors is an integer number (1032236946).

Almost surely, 2^2064473891 is an apocalyptic number.

2064473891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064473891 is an equidigital number, since it uses as much as digits as its factorization.

2064473891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2064473891 is about 45436.4819390762. The cubic root of 2064473891 is about 1273.3167876487.

The spelling of 2064473891 in words is "two billion, sixty-four million, four hundred seventy-three thousand, eight hundred ninety-one".