1864065823 has 2 divisors, whose sum is σ = 1864065824. Its totient is φ = 1864065822.

The previous prime is 1864065787. The next prime is 1864065829. The reversal of 1864065823 is 3285604681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1864065823 - 2²⁵ = 1830511391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1864065823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1864065829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932032911 + 932032912.

It is an arithmetic number, because the mean of its divisors is an integer number (932032912).

Almost surely, 2^1864065823 is an apocalyptic number.

1864065823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864065823 is an equidigital number, since it uses as much as digits as its factorization.

1864065823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 1864065823 is about 43174.8285810147. The cubic root of 1864065823 is about 1230.7043849179.

The spelling of 1864065823 in words is "one billion, eight hundred sixty-four million, sixty-five thousand, eight hundred twenty-three".