1913706469 has 2 divisors, whose sum is σ = 1913706470. Its totient is φ = 1913706468.

The previous prime is 1913706437. The next prime is 1913706479. The reversal of 1913706469 is 9646073191.

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., 1777634244 + 136072225 = 42162^2 + 11665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1913706469 - 2⁵ = 1913706437 is a prime.

It is a super-2 number, since 2×1913706469² = 7324544898984895922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913706409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956853234 + 956853235.

It is an arithmetic number, because the mean of its divisors is an integer number (956853235).

Almost surely, 2^1913706469 is an apocalyptic number.

It is an amenable number.

1913706469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913706469 is an equidigital number, since it uses as much as digits as its factorization.

1913706469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1913706469 is about 43745.9308850549. The cubic root of 1913706469 is about 1241.5334975259.

The spelling of 1913706469 in words is "one billion, nine hundred thirteen million, seven hundred six thousand, four hundred sixty-nine".