19042135201 has 2 divisors, whose sum is σ = 19042135202. Its totient is φ = 19042135200.

The previous prime is 19042135199. The next prime is 19042135219. The reversal of 19042135201 is 10253124091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16231014801 + 2811120400 = 127401^2 + 53020^2 .

It is a cyclic number.

It is not a de Polignac number, because 19042135201 - 2¹ = 19042135199 is a prime.

Together with 19042135199, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19042135201.

It is not a weakly prime, because it can be changed into another prime (19042135261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9521067600 + 9521067601.

It is an arithmetic number, because the mean of its divisors is an integer number (9521067601).

Almost surely, 2^19042135201 is an apocalyptic number.

It is an amenable number.

19042135201 is a deficient number, since it is larger than the sum of its proper divisors (1).

19042135201 is an equidigital number, since it uses as much as digits as its factorization.

19042135201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 19042135201 its reverse (10253124091), we get a palindrome (29295259292).

The spelling of 19042135201 in words is "nineteen billion, forty-two million, one hundred thirty-five thousand, two hundred one".