1316208269 has 2 divisors, whose sum is σ = 1316208270. Its totient is φ = 1316208268.

The previous prime is 1316208253. The next prime is 1316208277. The reversal of 1316208269 is 9628026131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1296936169 + 19272100 = 36013^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316208269 - 2⁴ = 1316208253 is a prime.

It is a super-3 number, since 3×1316208269³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316204269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658104134 + 658104135.

It is an arithmetic number, because the mean of its divisors is an integer number (658104135).

Almost surely, 2^1316208269 is an apocalyptic number.

It is an amenable number.

1316208269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316208269 is an equidigital number, since it uses as much as digits as its factorization.

1316208269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1316208269 is about 36279.5847412839. The cubic root of 1316208269 is about 1095.9099541189.

The spelling of 1316208269 in words is "one billion, three hundred sixteen million, two hundred eight thousand, two hundred sixty-nine".