1669407793 has 4 divisors (see below), whose sum is σ = 1675349028. Its totient is φ = 1663466560.

The previous prime is 1669407767. The next prime is 1669407797. The reversal of 1669407793 is 3977049661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 774620224 + 894787569 = 27832^2 + 29913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1669407793 - 2⁹ = 1669407281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1669407793.

It is not an unprimeable number, because it can be changed into a prime (1669407797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970196 + ... + 2970757.

It is an arithmetic number, because the mean of its divisors is an integer number (418837257).

Almost surely, 2^1669407793 is an apocalyptic number.

It is an amenable number.

1669407793 is a deficient number, since it is larger than the sum of its proper divisors (5941235).

1669407793 is an equidigital number, since it uses as much as digits as its factorization.

1669407793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941234.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 1669407793 is about 40858.3870582283. The cubic root of 1669407793 is about 1186.2807384062.

The spelling of 1669407793 in words is "one billion, six hundred sixty-nine million, four hundred seven thousand, seven hundred ninety-three".