19102002001 has 2 divisors, whose sum is σ = 19102002002. Its totient is φ = 19102002000.

The previous prime is 19102001983. The next prime is 19102002011. The reversal of 19102002001 is 10020020191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14309901376 + 4792100625 = 119624^2 + 69225^2 .

It is a cyclic number.

It is not a de Polignac number, because 19102002001 - 2²⁵ = 19068447569 is a prime.

It is not a weakly prime, because it can be changed into another prime (19102002011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9551001000 + 9551001001.

It is an arithmetic number, because the mean of its divisors is an integer number (9551001001).

Almost surely, 2^19102002001 is an apocalyptic number.

It is an amenable number.

19102002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

19102002001 is an equidigital number, since it uses as much as digits as its factorization.

19102002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 19102002001 its reverse (10020020191), we get a palindrome (29122022192).

The spelling of 19102002001 in words is "nineteen billion, one hundred two million, two thousand, one".