1669545486 has 256 divisors, whose sum is σ = 4810752000. Its totient is φ = 419489280.

The previous prime is 1669545481. The next prime is 1669545547. The reversal of 1669545486 is 6845459661.

1669545486 is a `hidden beast` number, since 1 + 6 + 6 + 95 + 4 + 548 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669545481) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 53856291 + ... + 53856321.

It is an arithmetic number, because the mean of its divisors is an integer number (18792000).

Almost surely, 2^1669545486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669545486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2405376000).

1669545486 is an abundant number, since it is smaller than the sum of its proper divisors (3141206514).

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

1669545486 is a wasteful number, since it uses less digits than its factorization.

1669545486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 89 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 1669545486 is about 40860.0720263682. The cubic root of 1669545486 is about 1186.3133523794.

The spelling of 1669545486 in words is "one billion, six hundred sixty-nine million, five hundred forty-five thousand, four hundred eighty-six".