19031288137 has 2 divisors, whose sum is σ = 19031288138. Its totient is φ = 19031288136.

The previous prime is 19031288063. The next prime is 19031288149. The reversal of 19031288137 is 73188213091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18927981241 + 103306896 = 137579^2 + 10164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19031288137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19031288093 and 19031288102.

It is not a weakly prime, because it can be changed into another prime (19031288167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9515644068 + 9515644069.

It is an arithmetic number, because the mean of its divisors is an integer number (9515644069).

Almost surely, 2^19031288137 is an apocalyptic number.

It is an amenable number.

19031288137 is a deficient number, since it is larger than the sum of its proper divisors (1).

19031288137 is an equidigital number, since it uses as much as digits as its factorization.

19031288137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 19031288137 in words is "nineteen billion, thirty-one million, two hundred eighty-eight thousand, one hundred thirty-seven".