1669478080 has 56 divisors (see below), whose sum is σ = 3979121328. Its totient is φ = 667173888.

The previous prime is 1669478077. The next prime is 1669478089. The reversal of 1669478080 is 808749661.

It is not an unprimeable number, because it can be changed into a prime (1669478089) 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, 522247 + ... + 525433.

It is an arithmetic number, because the mean of its divisors is an integer number (71055738).

Almost surely, 2^1669478080 is an apocalyptic number.

1669478080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1669478080 is an abundant number, since it is smaller than the sum of its proper divisors (2309643248).

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

1669478080 is a wasteful number, since it uses less digits than its factorization.

1669478080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 1669478080 is about 40859.2471785764. The cubic root of 1669478080 is about 1186.2973868138.

The spelling of 1669478080 in words is "one billion, six hundred sixty-nine million, four hundred seventy-eight thousand, eighty".