33018985393 has 2 divisors, whose sum is σ = 33018985394. Its totient is φ = 33018985392.

The previous prime is 33018985343. The next prime is 33018985427. The reversal of 33018985393 is 39358981033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32648153344 + 370832049 = 180688^2 + 19257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33018985393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33018985393.

It is not a weakly prime, because it can be changed into another prime (33018985303) 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, 16509492696 + 16509492697.

It is an arithmetic number, because the mean of its divisors is an integer number (16509492697).

Almost surely, 2^33018985393 is an apocalyptic number.

It is an amenable number.

33018985393 is a deficient number, since it is larger than the sum of its proper divisors (1).

33018985393 is an equidigital number, since it uses as much as digits as its factorization.

33018985393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 33018985393 in words is "thirty-three billion, eighteen million, nine hundred eighty-five thousand, three hundred ninety-three".