19309742633 has 2 divisors, whose sum is σ = 19309742634. Its totient is φ = 19309742632.

The previous prime is 19309742611. The next prime is 19309742657. The reversal of 19309742633 is 33624790391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18876561664 + 433180969 = 137392^2 + 20813^2 .

It is a cyclic number.

It is not a de Polignac number, because 19309742633 - 2⁸ = 19309742377 is a prime.

It is not a weakly prime, because it can be changed into another prime (19309742033) 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, 9654871316 + 9654871317.

It is an arithmetic number, because the mean of its divisors is an integer number (9654871317).

Almost surely, 2^19309742633 is an apocalyptic number.

It is an amenable number.

19309742633 is a deficient number, since it is larger than the sum of its proper divisors (1).

19309742633 is an equidigital number, since it uses as much as digits as its factorization.

19309742633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 19309742633 in words is "nineteen billion, three hundred nine million, seven hundred forty-two thousand, six hundred thirty-three".