2019936823 has 2 divisors, whose sum is σ = 2019936824. Its totient is φ = 2019936822.

The previous prime is 2019936817. The next prime is 2019936839. The reversal of 2019936823 is 3286399102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2019936823 - 2²¹ = 2017839671 is a prime.

It is a super-2 number, since 2×2019936823² = 8160289537822666658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2019936823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2019936883) 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, 1009968411 + 1009968412.

It is an arithmetic number, because the mean of its divisors is an integer number (1009968412).

Almost surely, 2^2019936823 is an apocalyptic number.

2019936823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2019936823 is an equidigital number, since it uses as much as digits as its factorization.

2019936823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 2019936823 is about 44943.7072680926. The cubic root of 2019936823 is about 1264.0936860989.

It can be divided in two parts, 20199368 and 23, that multiplied together give a palindrome (464585464).

The spelling of 2019936823 in words is "two billion, nineteen million, nine hundred thirty-six thousand, eight hundred twenty-three".