1922871823 has 2 divisors, whose sum is σ = 1922871824. Its totient is φ = 1922871822.

The previous prime is 1922871809. The next prime is 1922871917. The reversal of 1922871823 is 3281782291.

It is a weak prime.

It is an emirp because it is prime and its reverse (3281782291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1922871823 - 2⁵ = 1922871791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1922871823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1922871023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961435911 + 961435912.

It is an arithmetic number, because the mean of its divisors is an integer number (961435912).

Almost surely, 2^1922871823 is an apocalyptic number.

1922871823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922871823 is an equidigital number, since it uses as much as digits as its factorization.

1922871823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The square root of 1922871823 is about 43850.5624023227. The cubic root of 1922871823 is about 1243.5123757445.

The spelling of 1922871823 in words is "one billion, nine hundred twenty-two million, eight hundred seventy-one thousand, eight hundred twenty-three".