39190808357 has 2 divisors, whose sum is σ = 39190808358. Its totient is φ = 39190808356.

The previous prime is 39190808353. The next prime is 39190808381. The reversal of 39190808357 is 75380809193.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28441473316 + 10749335041 = 168646^2 + 103679^2 .

It is an emirp because it is prime and its reverse (75380809193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39190808357 - 2² = 39190808353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39190808299 and 39190808308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39190808353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19595404178 + 19595404179.

It is an arithmetic number, because the mean of its divisors is an integer number (19595404179).

Almost surely, 2^39190808357 is an apocalyptic number.

It is an amenable number.

39190808357 is a deficient number, since it is larger than the sum of its proper divisors (1).

39190808357 is an equidigital number, since it uses as much as digits as its factorization.

39190808357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 39190808357 in words is "thirty-nine billion, one hundred ninety million, eight hundred eight thousand, three hundred fifty-seven".