19120930109497 has 2 divisors, whose sum is σ = 19120930109498. Its totient is φ = 19120930109496.

The previous prime is 19120930109423. The next prime is 19120930109507. The reversal of 19120930109497 is 79490103902191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12705367962681 + 6415562146816 = 3564459^2 + 2532896^2 .

It is an emirp because it is prime and its reverse (79490103902191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19120930109497 - 2²³ = 19120921720889 is a prime.

It is not a weakly prime, because it can be changed into another prime (19120930109297) 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, 9560465054748 + 9560465054749.

It is an arithmetic number, because the mean of its divisors is an integer number (9560465054749).

Almost surely, 2^{19120930109497} is an apocalyptic number.

It is an amenable number.

19120930109497 is a deficient number, since it is larger than the sum of its proper divisors (1).

19120930109497 is an equidigital number, since it uses as much as digits as its factorization.

19120930109497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The spelling of 19120930109497 in words is "nineteen trillion, one hundred twenty billion, nine hundred thirty million, one hundred nine thousand, four hundred ninety-seven".