19660133 has 2 divisors, whose sum is σ = 19660134. Its totient is φ = 19660132.

The previous prime is 19660099. The next prime is 19660153. The reversal of 19660133 is 33106691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13890529 + 5769604 = 3727^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 19660133 - 2¹² = 19656037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19660096 and 19660105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19660153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9830066 + 9830067.

It is an arithmetic number, because the mean of its divisors is an integer number (9830067).

Almost surely, 2^19660133 is an apocalyptic number.

It is an amenable number.

19660133 is a deficient number, since it is larger than the sum of its proper divisors (1).

19660133 is an equidigital number, since it uses as much as digits as its factorization.

19660133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 19660133 is about 4433.9748533342. The cubic root of 19660133 is about 269.8954007267.

The spelling of 19660133 in words is "nineteen million, six hundred sixty thousand, one hundred thirty-three".