1288373883938 has 8 divisors (see below), whose sum is σ = 1942370779932. Its totient is φ = 640916957296.

The previous prime is 1288373883917. The next prime is 1288373883941. The reversal of 1288373883938 is 8393883738821.

It can be written as a sum of positive squares in 2 ways, for example, as 1122483037729 + 165890846209 = 1059473^2 + 407297^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634991845 + ... + 1634992632.

Almost surely, 2^{1288373883938} is an apocalyptic number.

1288373883938 is a deficient number, since it is larger than the sum of its proper divisors (653996895994).

1288373883938 is a wasteful number, since it uses less digits than its factorization.

1288373883938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269984676.

The product of its digits is 334430208, while the sum is 71.

The spelling of 1288373883938 in words is "one trillion, two hundred eighty-eight billion, three hundred seventy-three million, eight hundred eighty-three thousand, nine hundred thirty-eight".