1171264069 has 2 divisors, whose sum is σ = 1171264070. Its totient is φ = 1171264068.

The previous prime is 1171264043. The next prime is 1171264099. The reversal of 1171264069 is 9604621711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 765241569 + 406022500 = 27663^2 + 20150^2 .

It is an emirp because it is prime and its reverse (9604621711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1171264069 - 2¹¹ = 1171262021 is a prime.

It is a super-2 number, since 2×1171264069² = 2743719038660873522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171264099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585632034 + 585632035.

It is an arithmetic number, because the mean of its divisors is an integer number (585632035).

Almost surely, 2^1171264069 is an apocalyptic number.

It is an amenable number.

1171264069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171264069 is an equidigital number, since it uses as much as digits as its factorization.

1171264069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1171264069 is about 34223.7354623951. The cubic root of 1171264069 is about 1054.1075894118.

The spelling of 1171264069 in words is "one billion, one hundred seventy-one million, two hundred sixty-four thousand, sixty-nine".