1288369385 has 8 divisors (see below), whose sum is σ = 1627414080. Its totient is φ = 976448304.

The previous prime is 1288369321. The next prime is 1288369391. The reversal of 1288369385 is 5839638821.

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

It is not a de Polignac number, because 1288369385 - 2⁶ = 1288369321 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6780797 + ... + 6780986.

It is an arithmetic number, because the mean of its divisors is an integer number (203426760).

Almost surely, 2^1288369385 is an apocalyptic number.

It is an amenable number.

1288369385 is a deficient number, since it is larger than the sum of its proper divisors (339044695).

1288369385 is a wasteful number, since it uses less digits than its factorization.

1288369385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561807.

The product of its digits is 2488320, while the sum is 53.

The square root of 1288369385 is about 35893.8627762463. The cubic root of 1288369385 is about 1088.1283664976.

The spelling of 1288369385 in words is "one billion, two hundred eighty-eight million, three hundred sixty-nine thousand, three hundred eighty-five".