1669049266 has 8 divisors (see below), whose sum is σ = 2507543424. Its totient is φ = 833201460.

The previous prime is 1669049251. The next prime is 1669049293. The reversal of 1669049266 is 6629409661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 660010 + ... + 662533.

It is an arithmetic number, because the mean of its divisors is an integer number (313442928).

Almost surely, 2^1669049266 is an apocalyptic number.

1669049266 is a deficient number, since it is larger than the sum of its proper divisors (838494158).

1669049266 is a wasteful number, since it uses less digits than its factorization.

1669049266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323176.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 1669049266 is about 40853.9993880648. Note that the first 3 decimals coincide. The cubic root of 1669049266 is about 1186.1958092620.

It can be divided in two parts, 16690 and 49266, that added together give a palindrome (65956).

The spelling of 1669049266 in words is "one billion, six hundred sixty-nine million, forty-nine thousand, two hundred sixty-six".