1318301689 has 2 divisors, whose sum is σ = 1318301690. Its totient is φ = 1318301688.

The previous prime is 1318301657. The next prime is 1318301707. The reversal of 1318301689 is 9861038131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1107558400 + 210743289 = 33280^2 + 14517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318301689 - 2⁵ = 1318301657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318301609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659150844 + 659150845.

It is an arithmetic number, because the mean of its divisors is an integer number (659150845).

Almost surely, 2^1318301689 is an apocalyptic number.

It is an amenable number.

1318301689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318301689 is an equidigital number, since it uses as much as digits as its factorization.

1318301689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1318301689 is about 36308.4244907432. The cubic root of 1318301689 is about 1096.4906587184.

The spelling of 1318301689 in words is "one billion, three hundred eighteen million, three hundred one thousand, six hundred eighty-nine".