1913490966769 has 2 divisors, whose sum is σ = 1913490966770. Its totient is φ = 1913490966768.

The previous prime is 1913490966749. The next prime is 1913490966847. The reversal of 1913490966769 is 9676690943191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1746393966144 + 167097000625 = 1321512^2 + 408775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913490966769 is a prime.

It is a super-2 number, since 2×1913490966769² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1913490966698 and 1913490966707.

It is not a weakly prime, because it can be changed into another prime (1913490966749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956745483384 + 956745483385.

It is an arithmetic number, because the mean of its divisors is an integer number (956745483385).

Almost surely, 2^{1913490966769} is an apocalyptic number.

It is an amenable number.

1913490966769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913490966769 is an equidigital number, since it uses as much as digits as its factorization.

1913490966769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119042784, while the sum is 70.

The spelling of 1913490966769 in words is "one trillion, nine hundred thirteen billion, four hundred ninety million, nine hundred sixty-six thousand, seven hundred sixty-nine".