1669134347 has 2 divisors, whose sum is σ = 1669134348. Its totient is φ = 1669134346.

The previous prime is 1669134319. The next prime is 1669134349. The reversal of 1669134347 is 7434319661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1669134347 - 2¹⁶ = 1669068811 is a prime.

Together with 1669134349, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1669134298 and 1669134307.

It is not a weakly prime, because it can be changed into another prime (1669134349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834567173 + 834567174.

It is an arithmetic number, because the mean of its divisors is an integer number (834567174).

Almost surely, 2^1669134347 is an apocalyptic number.

1669134347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669134347 is an equidigital number, since it uses as much as digits as its factorization.

1669134347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 1669134347 is about 40855.0406559582. The cubic root of 1669134347 is about 1186.2159646509.

The spelling of 1669134347 in words is "one billion, six hundred sixty-nine million, one hundred thirty-four thousand, three hundred forty-seven".