33518838349 has 2 divisors, whose sum is σ = 33518838350. Its totient is φ = 33518838348.

The previous prime is 33518838299. The next prime is 33518838371. The reversal of 33518838349 is 94383881533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20269216900 + 13249621449 = 142370^2 + 115107^2 .

It is an emirp because it is prime and its reverse (94383881533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33518838349 - 2²³ = 33510449741 is a prime.

It is a super-2 number, since 2×33518838349² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33518838349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33518836349) 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, 16759419174 + 16759419175.

It is an arithmetic number, because the mean of its divisors is an integer number (16759419175).

Almost surely, 2^33518838349 is an apocalyptic number.

It is an amenable number.

33518838349 is a deficient number, since it is larger than the sum of its proper divisors (1).

33518838349 is an equidigital number, since it uses as much as digits as its factorization.

33518838349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 55.

The spelling of 33518838349 in words is "thirty-three billion, five hundred eighteen million, eight hundred thirty-eight thousand, three hundred forty-nine".