19351110133 has 2 divisors, whose sum is σ = 19351110134. Its totient is φ = 19351110132.

The previous prime is 19351110091. The next prime is 19351110161. The reversal of 19351110133 is 33101115391.

It is an a-pointer prime, because the next prime (19351110161) can be obtained adding 19351110133 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12656925009 + 6694185124 = 112503^2 + 81818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19351110133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19351180133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9675555066 + 9675555067.

It is an arithmetic number, because the mean of its divisors is an integer number (9675555067).

Almost surely, 2^19351110133 is an apocalyptic number.

It is an amenable number.

19351110133 is a deficient number, since it is larger than the sum of its proper divisors (1).

19351110133 is an equidigital number, since it uses as much as digits as its factorization.

19351110133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 28.

The spelling of 19351110133 in words is "nineteen billion, three hundred fifty-one million, one hundred ten thousand, one hundred thirty-three".