19992089329 has 2 divisors, whose sum is σ = 19992089330. Its totient is φ = 19992089328.

The previous prime is 19992089291. The next prime is 19992089353. The reversal of 19992089329 is 92398029991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17337778929 + 2654310400 = 131673^2 + 51520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19992089329 is a prime.

It is not a weakly prime, because it can be changed into another prime (19992086329) 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, 9996044664 + 9996044665.

It is an arithmetic number, because the mean of its divisors is an integer number (9996044665).

Almost surely, 2^19992089329 is an apocalyptic number.

It is an amenable number.

19992089329 is a deficient number, since it is larger than the sum of its proper divisors (1).

19992089329 is an equidigital number, since it uses as much as digits as its factorization.

19992089329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5668704, while the sum is 61.

The spelling of 19992089329 in words is "nineteen billion, nine hundred ninety-two million, eighty-nine thousand, three hundred twenty-nine".