1318763020669 has 2 divisors, whose sum is σ = 1318763020670. Its totient is φ = 1318763020668.

The previous prime is 1318763020541. The next prime is 1318763020699. The reversal of 1318763020669 is 9660203678131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1046451253444 + 272311767225 = 1022962^2 + 521835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318763020669 - 2⁷ = 1318763020541 is a prime.

It is a super-2 number, since 2×1318763020669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318763020699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659381510334 + 659381510335.

It is an arithmetic number, because the mean of its divisors is an integer number (659381510335).

Almost surely, 2^{1318763020669} is an apocalyptic number.

It is an amenable number.

1318763020669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318763020669 is an equidigital number, since it uses as much as digits as its factorization.

1318763020669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 1318763020669 in words is "one trillion, three hundred eighteen billion, seven hundred sixty-three million, twenty thousand, six hundred sixty-nine".