1286940875 has 24 divisors (see below), whose sum is σ = 1765405824. Its totient is φ = 935946000.

The previous prime is 1286940833. The next prime is 1286940899. The reversal of 1286940875 is 5780496821.

It is not a de Polignac number, because 1286940875 - 2²² = 1282746571 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27419 + ... + 57668.

It is an arithmetic number, because the mean of its divisors is an integer number (73558576).

Almost surely, 2^1286940875 is an apocalyptic number.

1286940875 is a deficient number, since it is larger than the sum of its proper divisors (478464949).

1286940875 is an equidigital number, since it uses as much as digits as its factorization.

1286940875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85124 (or 85103 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 1286940875 is about 35873.9581730257. The cubic root of 1286940875 is about 1087.7260550905.

The spelling of 1286940875 in words is "one billion, two hundred eighty-six million, nine hundred forty thousand, eight hundred seventy-five".