1264517117 has 2 divisors, whose sum is σ = 1264517118. Its totient is φ = 1264517116.

The previous prime is 1264517101. The next prime is 1264517147. The reversal of 1264517117 is 7117154621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756195001 + 508322116 = 27499^2 + 22546^2 .

It is an emirp because it is prime and its reverse (7117154621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264517117 - 2⁴ = 1264517101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264517147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632258558 + 632258559.

It is an arithmetic number, because the mean of its divisors is an integer number (632258559).

Almost surely, 2^1264517117 is an apocalyptic number.

It is an amenable number.

1264517117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264517117 is an equidigital number, since it uses as much as digits as its factorization.

1264517117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 35.

The square root of 1264517117 is about 35560.0494515967. The cubic root of 1264517117 is about 1081.3714621277.

The spelling of 1264517117 in words is "one billion, two hundred sixty-four million, five hundred seventeen thousand, one hundred seventeen".