1773438068818 has 8 divisors (see below), whose sum is σ = 2864784572748. Its totient is φ = 818509877904.

The previous prime is 1773438068807. The next prime is 1773438068863. The reversal of 1773438068818 is 8188608343771.

It can be written as a sum of positive squares in 2 ways, for example, as 1741959147889 + 31478920929 = 1319833^2 + 177423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1773438068818.

It is an unprimeable number.

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, 34104578221 + ... + 34104578272.

Almost surely, 2^{1773438068818} is an apocalyptic number.

1773438068818 is a deficient number, since it is larger than the sum of its proper divisors (1091346503930).

1773438068818 is a wasteful number, since it uses less digits than its factorization.

1773438068818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68209156508.

The product of its (nonzero) digits is 43352064, while the sum is 64.

The spelling of 1773438068818 in words is "one trillion, seven hundred seventy-three billion, four hundred thirty-eight million, sixty-eight thousand, eight hundred eighteen".