19944243083 has 2 divisors, whose sum is σ = 19944243084. Its totient is φ = 19944243082.

The previous prime is 19944243029. The next prime is 19944243127. The reversal of 19944243083 is 38034244991.

It is a strong prime.

It is an emirp because it is prime and its reverse (38034244991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19944243083 - 2¹² = 19944238987 is a prime.

It is not a weakly prime, because it can be changed into another prime (19944243013) 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, 9972121541 + 9972121542.

It is an arithmetic number, because the mean of its divisors is an integer number (9972121542).

Almost surely, 2^19944243083 is an apocalyptic number.

19944243083 is a deficient number, since it is larger than the sum of its proper divisors (1).

19944243083 is an equidigital number, since it uses as much as digits as its factorization.

19944243083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 19944243083 in words is "nineteen billion, nine hundred forty-four million, two hundred forty-three thousand, eighty-three".