19238738797 has 2 divisors, whose sum is σ = 19238738798. Its totient is φ = 19238738796.

The previous prime is 19238738741. The next prime is 19238738801. The reversal of 19238738797 is 79783783291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19229091561 + 9647236 = 138669^2 + 3106^2 .

It is a cyclic number.

It is not a de Polignac number, because 19238738797 - 2⁷ = 19238738669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19238738737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9619369398 + 9619369399.

It is an arithmetic number, because the mean of its divisors is an integer number (9619369399).

Almost surely, 2^19238738797 is an apocalyptic number.

It is an amenable number.

19238738797 is a deficient number, since it is larger than the sum of its proper divisors (1).

19238738797 is an equidigital number, since it uses as much as digits as its factorization.

19238738797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32006016, while the sum is 64.

The spelling of 19238738797 in words is "nineteen billion, two hundred thirty-eight million, seven hundred thirty-eight thousand, seven hundred ninety-seven".