1669073293 has 4 divisors (see below), whose sum is σ = 1714183420. Its totient is φ = 1623963168.

The previous prime is 1669073281. The next prime is 1669073303. The reversal of 1669073293 is 3923709661.

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 1410603364 + 258469929 = 37558^2 + 16077^2 .

It is a cyclic number.

It is not a de Polignac number, because 1669073293 - 2¹⁷ = 1668942221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669073213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22555008 + ... + 22555081.

It is an arithmetic number, because the mean of its divisors is an integer number (428545855).

Almost surely, 2^1669073293 is an apocalyptic number.

It is an amenable number.

1669073293 is a deficient number, since it is larger than the sum of its proper divisors (45110127).

1669073293 is an equidigital number, since it uses as much as digits as its factorization.

1669073293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45110126.

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 1669073293 is about 40854.2934463442. The cubic root of 1669073293 is about 1186.2015012430.

The spelling of 1669073293 in words is "one billion, six hundred sixty-nine million, seventy-three thousand, two hundred ninety-three".