1286349868 has 36 divisors (see below), whose sum is σ = 2339784720. Its totient is φ = 618769984.

The previous prime is 1286349847. The next prime is 1286349899. The reversal of 1286349868 is 8689436821.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1308105 + ... + 1309087.

It is an arithmetic number, because the mean of its divisors is an integer number (64994020).

Almost surely, 2^1286349868 is an apocalyptic number.

It is an amenable number.

1286349868 is a deficient number, since it is larger than the sum of its proper divisors (1053434852).

1286349868 is a wasteful number, since it uses less digits than its factorization.

1286349868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1403 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 55.

The square root of 1286349868 is about 35865.7199565267. The cubic root of 1286349868 is about 1087.5595226680.

The spelling of 1286349868 in words is "one billion, two hundred eighty-six million, three hundred forty-nine thousand, eight hundred sixty-eight".