1338517991284 has 6 divisors (see below), whose sum is σ = 2342406484754. Its totient is φ = 669258995640.

The previous prime is 1338517991273. The next prime is 1338517991309. The reversal of 1338517991284 is 4821997158331.

It can be written as a sum of positive squares in only one way, i.e., 1051834848100 + 286683143184 = 1025590^2 + 535428^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167314748907 + ... + 167314748914.

Almost surely, 2^{1338517991284} is an apocalyptic number.

It is an amenable number.

1338517991284 is a deficient number, since it is larger than the sum of its proper divisors (1003888493470).

1338517991284 is a wasteful number, since it uses less digits than its factorization.

1338517991284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334629497825 (or 334629497823 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 61.

The spelling of 1338517991284 in words is "one trillion, three hundred thirty-eight billion, five hundred seventeen million, nine hundred ninety-one thousand, two hundred eighty-four".