1318270859 has 2 divisors, whose sum is σ = 1318270860. Its totient is φ = 1318270858.

The previous prime is 1318270841. The next prime is 1318270897. The reversal of 1318270859 is 9580728131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318270859 - 2²⁴ = 1301493643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318272859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659135429 + 659135430.

It is an arithmetic number, because the mean of its divisors is an integer number (659135430).

Almost surely, 2^1318270859 is an apocalyptic number.

1318270859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318270859 is an equidigital number, since it uses as much as digits as its factorization.

1318270859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 1318270859 is about 36307.9999311447. Note that the first 4 decimals coincide. The cubic root of 1318270859 is about 1096.4821110870.

The spelling of 1318270859 in words is "one billion, three hundred eighteen million, two hundred seventy thousand, eight hundred fifty-nine".