1669052380 has 24 divisors (see below), whose sum is σ = 3554379360. Its totient is φ = 658217280.

The previous prime is 1669052323. The next prime is 1669052383. The reversal of 1669052380 is 832509661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669052383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586275 + ... + 589114.

It is an arithmetic number, because the mean of its divisors is an integer number (148099140).

Almost surely, 2^1669052380 is an apocalyptic number.

1669052380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1669052380 is an abundant number, since it is smaller than the sum of its proper divisors (1885326980).

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

1669052380 is a wasteful number, since it uses less digits than its factorization.

1669052380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175469 (or 1175467 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1669052380 is about 40854.0374993709. The cubic root of 1669052380 is about 1186.1965469697.

The spelling of 1669052380 in words is "one billion, six hundred sixty-nine million, fifty-two thousand, three hundred eighty".