1669441536 has 384 divisors, whose sum is σ = 5975424000. Its totient is φ = 449888256.

The previous prime is 1669441507. The next prime is 1669441537. The reversal of 1669441536 is 6351449661.

1669441536 is a `hidden beast` number, since 16 + 69 + 4 + 41 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a junction number, because it is equal to n+sod(n) for n = 1669441491 and 1669441500.

It is not an unprimeable number, because it can be changed into a prime (1669441537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7354255 + ... + 7354481.

It is an arithmetic number, because the mean of its divisors is an integer number (15561000).

Almost surely, 2^1669441536 is an apocalyptic number.

1669441536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669441536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2987712000).

1669441536 is an abundant number, since it is smaller than the sum of its proper divisors (4305982464).

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

1669441536 is a wasteful number, since it uses less digits than its factorization.

1669441536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 258 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1669441536 is about 40858.7999823783. The cubic root of 1669441536 is about 1186.2887309413.

The spelling of 1669441536 in words is "one billion, six hundred sixty-nine million, four hundred forty-one thousand, five hundred thirty-six".