33938313389 has 4 divisors (see below), whose sum is σ = 35413892256. Its totient is φ = 32462734524.

The previous prime is 33938313377. The next prime is 33938313403. The reversal of 33938313389 is 98331383933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98331383933 = 29 ⋅3390737377.

It is a cyclic number.

It is not a de Polignac number, because 33938313389 - 2¹⁶ = 33938247853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33938313389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33938313359) 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 in 3 ways as a sum of consecutive naturals, for example, 737789399 + ... + 737789444.

It is an arithmetic number, because the mean of its divisors is an integer number (8853473064).

Almost surely, 2^33938313389 is an apocalyptic number.

It is an amenable number.

33938313389 is a deficient number, since it is larger than the sum of its proper divisors (1475578867).

33938313389 is a wasteful number, since it uses less digits than its factorization.

33938313389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475578866.

The product of its digits is 3779136, while the sum is 53.

The spelling of 33938313389 in words is "thirty-three billion, nine hundred thirty-eight million, three hundred thirteen thousand, three hundred eighty-nine".