19237940508019 has 2 divisors, whose sum is σ = 19237940508020. Its totient is φ = 19237940508018.

The previous prime is 19237940507999. The next prime is 19237940508067. The reversal of 19237940508019 is 91080504973291.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19237940508019 is a prime.

It is a super-2 number, since 2×19237940508019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19237940508079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9618970254009 + 9618970254010.

It is an arithmetic number, because the mean of its divisors is an integer number (9618970254010).

Almost surely, 2^{19237940508019} is an apocalyptic number.

19237940508019 is a deficient number, since it is larger than the sum of its proper divisors (1).

19237940508019 is an equidigital number, since it uses as much as digits as its factorization.

19237940508019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 19237940508019 in words is "nineteen trillion, two hundred thirty-seven billion, nine hundred forty million, five hundred eight thousand, nineteen".