39818913133 has 2 divisors, whose sum is σ = 39818913134. Its totient is φ = 39818913132.

The previous prime is 39818913107. The next prime is 39818913151. The reversal of 39818913133 is 33131981893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30308372649 + 9510540484 = 174093^2 + 97522^2 .

It is a cyclic number.

It is not a de Polignac number, because 39818913133 - 2⁹ = 39818912621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39818913163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19909456566 + 19909456567.

It is an arithmetic number, because the mean of its divisors is an integer number (19909456567).

Almost surely, 2^39818913133 is an apocalyptic number.

It is an amenable number.

39818913133 is a deficient number, since it is larger than the sum of its proper divisors (1).

39818913133 is an equidigital number, since it uses as much as digits as its factorization.

39818913133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 49.

The spelling of 39818913133 in words is "thirty-nine billion, eight hundred eighteen million, nine hundred thirteen thousand, one hundred thirty-three".