33728635819 has 2 divisors, whose sum is σ = 33728635820. Its totient is φ = 33728635818.

The previous prime is 33728635777. The next prime is 33728635879. The reversal of 33728635819 is 91853682733.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33728635819 - 2³¹ = 31581152171 is a prime.

It is a super-2 number, since 2×33728635819² (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 33728635819.

It is not a weakly prime, because it can be changed into another prime (33728635879) 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, 16864317909 + 16864317910.

It is an arithmetic number, because the mean of its divisors is an integer number (16864317910).

Almost surely, 2^33728635819 is an apocalyptic number.

33728635819 is a deficient number, since it is larger than the sum of its proper divisors (1).

33728635819 is an equidigital number, since it uses as much as digits as its factorization.

33728635819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The spelling of 33728635819 in words is "thirty-three billion, seven hundred twenty-eight million, six hundred thirty-five thousand, eight hundred nineteen".