1286318116 has 12 divisors (see below), whose sum is σ = 2251309788. Its totient is φ = 643086752.

The previous prime is 1286318101. The next prime is 1286318119. The reversal of 1286318116 is 6118136821.

It can be written as a sum of positive squares in 2 ways, for example, as 846577216 + 439740900 = 29096^2 + 20970^2 .

It is a super-2 number, since 2×1286318116² = 3309228591099578912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1286318119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53010 + ... + 73366.

It is an arithmetic number, because the mean of its divisors is an integer number (187609149).

Almost surely, 2^1286318116 is an apocalyptic number.

It is an amenable number.

1286318116 is a deficient number, since it is larger than the sum of its proper divisors (964991672).

1286318116 is a wasteful number, since it uses less digits than its factorization.

1286318116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36158 (or 36156 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 1286318116 is about 35865.2773027060. The cubic root of 1286318116 is about 1087.5505742279.

The spelling of 1286318116 in words is "one billion, two hundred eighty-six million, three hundred eighteen thousand, one hundred sixteen".