19946737043 has 2 divisors, whose sum is σ = 19946737044. Its totient is φ = 19946737042.

The previous prime is 19946736923. The next prime is 19946737081. The reversal of 19946737043 is 34073764991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19946737043 - 2¹⁴ = 19946720659 is a prime.

It is not a weakly prime, because it can be changed into another prime (19946737243) 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, 9973368521 + 9973368522.

It is an arithmetic number, because the mean of its divisors is an integer number (9973368522).

Almost surely, 2^19946737043 is an apocalyptic number.

19946737043 is a deficient number, since it is larger than the sum of its proper divisors (1).

19946737043 is an equidigital number, since it uses as much as digits as its factorization.

19946737043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 53.

The spelling of 19946737043 in words is "nineteen billion, nine hundred forty-six million, seven hundred thirty-seven thousand, forty-three".