1286560263 has 16 divisors (see below), whose sum is σ = 1822531680. Its totient is φ = 805746816.

The previous prime is 1286560241. The next prime is 1286560277. The reversal of 1286560263 is 3620656821.

1286560263 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1286560263 - 2⁶ = 1286560199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286560283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196620 + ... + 203057.

It is an arithmetic number, because the mean of its divisors is an integer number (113908230).

Almost surely, 2^1286560263 is an apocalyptic number.

1286560263 is a deficient number, since it is larger than the sum of its proper divisors (535971417).

1286560263 is a wasteful number, since it uses less digits than its factorization.

1286560263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399746.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1286560263 is about 35868.6529298216. The cubic root of 1286560263 is about 1087.6188130724.

The spelling of 1286560263 in words is "one billion, two hundred eighty-six million, five hundred sixty thousand, two hundred sixty-three".