19389722241793 has 2 divisors, whose sum is σ = 19389722241794. Its totient is φ = 19389722241792.

The previous prime is 19389722241767. The next prime is 19389722241847. The reversal of 19389722241793 is 39714222798391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15907198954689 + 3482523287104 = 3988383^2 + 1866152^2 .

It is a cyclic number.

It is not a de Polignac number, because 19389722241793 - 2⁵ = 19389722241761 is a prime.

It is a super-2 number, since 2×19389722241793² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19389722244793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9694861120896 + 9694861120897.

It is an arithmetic number, because the mean of its divisors is an integer number (9694861120897).

Almost surely, 2^{19389722241793} is an apocalyptic number.

It is an amenable number.

19389722241793 is a deficient number, since it is larger than the sum of its proper divisors (1).

19389722241793 is an equidigital number, since it uses as much as digits as its factorization.

19389722241793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 67.

The spelling of 19389722241793 in words is "nineteen trillion, three hundred eighty-nine billion, seven hundred twenty-two million, two hundred forty-one thousand, seven hundred ninety-three".