1288040375 has 16 divisors (see below), whose sum is σ = 1623405888. Its totient is φ = 1020220000.

The previous prime is 1288040353. The next prime is 1288040393. The reversal of 1288040375 is 5730408821.

It is not a de Polignac number, because 1288040375 - 2²⁰ = 1286991799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38387 + ... + 63636.

It is an arithmetic number, because the mean of its divisors is an integer number (101462868).

Almost surely, 2^1288040375 is an apocalyptic number.

1288040375 is a deficient number, since it is larger than the sum of its proper divisors (335365513).

1288040375 is a wasteful number, since it uses less digits than its factorization.

1288040375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102139 (or 102129 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1288040375 is about 35889.2793881404. The cubic root of 1288040375 is about 1088.0357337488.

The spelling of 1288040375 in words is "one billion, two hundred eighty-eight million, forty thousand, three hundred seventy-five".