209120036393 has 2 divisors, whose sum is σ = 209120036394. Its totient is φ = 209120036392.

The previous prime is 209120036381. The next prime is 209120036407. The reversal of 209120036393 is 393630021902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209024524864 + 95511529 = 457192^2 + 9773^2 .

It is a cyclic number.

It is not a de Polignac number, because 209120036393 - 2⁶ = 209120036329 is a prime.

It is not a weakly prime, because it can be changed into another prime (209120036303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104560018196 + 104560018197.

It is an arithmetic number, because the mean of its divisors is an integer number (104560018197).

Almost surely, 2^209120036393 is an apocalyptic number.

It is an amenable number.

209120036393 is a deficient number, since it is larger than the sum of its proper divisors (1).

209120036393 is an equidigital number, since it uses as much as digits as its factorization.

209120036393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 38.

The spelling of 209120036393 in words is "two hundred nine billion, one hundred twenty million, thirty-six thousand, three hundred ninety-three".