1288376812 has 12 divisors (see below), whose sum is σ = 2255124816. Its totient is φ = 644055440.

The previous prime is 1288376759. The next prime is 1288376849. The reversal of 1288376812 is 2186738821.

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, 9568 + ... + 51655.

It is an arithmetic number, because the mean of its divisors is an integer number (187927068).

Almost surely, 2^1288376812 is an apocalyptic number.

It is an amenable number.

1288376812 is a deficient number, since it is larger than the sum of its proper divisors (966748004).

1288376812 is a wasteful number, since it uses less digits than its factorization.

1288376812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66488 (or 66486 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 1288376812 is about 35893.9662338951. The cubic root of 1288376812 is about 1088.1304573870.

The spelling of 1288376812 in words is "one billion, two hundred eighty-eight million, three hundred seventy-six thousand, eight hundred twelve".