1290864317 has 2 divisors, whose sum is σ = 1290864318. Its totient is φ = 1290864316.

The previous prime is 1290864293. The next prime is 1290864347. The reversal of 1290864317 is 7134680921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 885003001 + 405861316 = 29749^2 + 20146^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290864317 - 2⁸ = 1290864061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290864347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645432158 + 645432159.

It is an arithmetic number, because the mean of its divisors is an integer number (645432159).

Almost surely, 2^1290864317 is an apocalyptic number.

It is an amenable number.

1290864317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290864317 is an equidigital number, since it uses as much as digits as its factorization.

1290864317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1290864317 is about 35928.6002649700. The cubic root of 1290864317 is about 1088.8303017721.

The spelling of 1290864317 in words is "one billion, two hundred ninety million, eight hundred sixty-four thousand, three hundred seventeen".