19423209863 has 2 divisors, whose sum is σ = 19423209864. Its totient is φ = 19423209862.

The previous prime is 19423209803. The next prime is 19423209877. The reversal of 19423209863 is 36890232491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19423209863 - 2²⁶ = 19356100999 is a prime.

It is a super-2 number, since 2×19423209863² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19423209803) 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, 9711604931 + 9711604932.

It is an arithmetic number, because the mean of its divisors is an integer number (9711604932).

Almost surely, 2^19423209863 is an apocalyptic number.

19423209863 is a deficient number, since it is larger than the sum of its proper divisors (1).

19423209863 is an equidigital number, since it uses as much as digits as its factorization.

19423209863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 19423209863 in words is "nineteen billion, four hundred twenty-three million, two hundred nine thousand, eight hundred sixty-three".