1669041469 has 2 divisors, whose sum is σ = 1669041470. Its totient is φ = 1669041468.

The previous prime is 1669041433. The next prime is 1669041503. The reversal of 1669041469 is 9641409661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1645275844 + 23765625 = 40562^2 + 4875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1669041469 - 2²¹ = 1666944317 is a prime.

It is a super-2 number, since 2×1669041469² = 5571398850483355922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1669041169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834520734 + 834520735.

It is an arithmetic number, because the mean of its divisors is an integer number (834520735).

Almost surely, 2^1669041469 is an apocalyptic number.

It is an amenable number.

1669041469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669041469 is an equidigital number, since it uses as much as digits as its factorization.

1669041469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1669041469 is about 40853.9039627794. The cubic root of 1669041469 is about 1186.1939621460.

The spelling of 1669041469 in words is "one billion, six hundred sixty-nine million, forty-one thousand, four hundred sixty-nine".