74338044637 has 2 divisors, whose sum is σ = 74338044638. Its totient is φ = 74338044636.

The previous prime is 74338044607. The next prime is 74338044707. The reversal of 74338044637 is 73644083347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56159994361 + 18178050276 = 236981^2 + 134826^2 .

It is a cyclic number.

It is not a de Polignac number, because 74338044637 - 2²³ = 74329656029 is a prime.

It is a super-2 number, since 2×74338044637² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74338044607) 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, 37169022318 + 37169022319.

It is an arithmetic number, because the mean of its divisors is an integer number (37169022319).

Almost surely, 2^74338044637 is an apocalyptic number.

It is an amenable number.

74338044637 is a deficient number, since it is larger than the sum of its proper divisors (1).

74338044637 is an equidigital number, since it uses as much as digits as its factorization.

74338044637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 74338044637 in words is "seventy-four billion, three hundred thirty-eight million, forty-four thousand, six hundred thirty-seven".