1669507040 has 48 divisors (see below), whose sum is σ = 3946728240. Its totient is φ = 667376640.

The previous prime is 1669507031. The next prime is 1669507051. The reversal of 1669507040 is 407059661.

It is a junction number, because it is equal to n+sod(n) for n = 1669506985 and 1669507003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401291 + ... + 405429.

It is an arithmetic number, because the mean of its divisors is an integer number (82223505).

Almost surely, 2^1669507040 is an apocalyptic number.

1669507040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1669507040 is an abundant number, since it is smaller than the sum of its proper divisors (2277221200).

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

1669507040 is a wasteful number, since it uses less digits than its factorization.

1669507040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6675 (or 6667 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1669507040 is about 40859.6015643814. The cubic root of 1669507040 is about 1186.3042462377.

The spelling of 1669507040 in words is "one billion, six hundred sixty-nine million, five hundred seven thousand, forty".