23844644819 has 2 divisors, whose sum is σ = 23844644820. Its totient is φ = 23844644818.

The previous prime is 23844644779. The next prime is 23844644861. The reversal of 23844644819 is 91844644832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23844644819 - 2²⁰ = 23843596243 is a prime.

It is a super-2 number, since 2×23844644819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23844644869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11922322409 + 11922322410.

It is an arithmetic number, because the mean of its divisors is an integer number (11922322410).

Almost surely, 2^23844644819 is an apocalyptic number.

23844644819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23844644819 is an equidigital number, since it uses as much as digits as its factorization.

23844644819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5308416, while the sum is 53.

The spelling of 23844644819 in words is "twenty-three billion, eight hundred forty-four million, six hundred forty-four thousand, eight hundred nineteen".