19764373229 has 2 divisors, whose sum is σ = 19764373230. Its totient is φ = 19764373228.

The previous prime is 19764373217. The next prime is 19764373231. The reversal of 19764373229 is 92237346791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19140722500 + 623650729 = 138350^2 + 24973^2 .

It is an emirp because it is prime and its reverse (92237346791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19764373229 - 2⁸ = 19764372973 is a prime.

Together with 19764373231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19764313229) 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, 9882186614 + 9882186615.

It is an arithmetic number, because the mean of its divisors is an integer number (9882186615).

Almost surely, 2^19764373229 is an apocalyptic number.

It is an amenable number.

19764373229 is a deficient number, since it is larger than the sum of its proper divisors (1).

19764373229 is an equidigital number, since it uses as much as digits as its factorization.

19764373229 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 19764373229 in words is "nineteen billion, seven hundred sixty-four million, three hundred seventy-three thousand, two hundred twenty-nine".