1669229620 has 48 divisors (see below), whose sum is σ = 3574021248. Its totient is φ = 654687360.

The previous prime is 1669229587. The next prime is 1669229633. The reversal of 1669229620 is 269229661.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 421369 + ... + 425311.

It is an arithmetic number, because the mean of its divisors is an integer number (74458776).

Almost surely, 2^1669229620 is an apocalyptic number.

1669229620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1669229620 is an abundant number, since it is smaller than the sum of its proper divisors (1904791628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1669229620 is a wasteful number, since it uses less digits than its factorization.

1669229620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360 (or 4358 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1669229620 is about 40856.2066276349. The cubic root of 1669229620 is about 1186.2385336757.

The spelling of 1669229620 in words is "one billion, six hundred sixty-nine million, two hundred twenty-nine thousand, six hundred twenty".