1317877469 has 2 divisors, whose sum is σ = 1317877470. Its totient is φ = 1317877468.

The previous prime is 1317877453. The next prime is 1317877523. The reversal of 1317877469 is 9647787131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940158244 + 377719225 = 30662^2 + 19435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317877469 - 2⁴ = 1317877453 is a prime.

It is a super-4 number, since 4×1317877469⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1317877469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317877409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658938734 + 658938735.

It is an arithmetic number, because the mean of its divisors is an integer number (658938735).

Almost surely, 2^1317877469 is an apocalyptic number.

It is an amenable number.

1317877469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317877469 is an equidigital number, since it uses as much as digits as its factorization.

1317877469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 53.

The square root of 1317877469 is about 36302.5821257938. The cubic root of 1317877469 is about 1096.3730318316.

The spelling of 1317877469 in words is "one billion, three hundred seventeen million, eight hundred seventy-seven thousand, four hundred sixty-nine".