1669537672 has 48 divisors (see below), whose sum is σ = 3446115120. Its totient is φ = 757716960.

The previous prime is 1669537669. The next prime is 1669537679. The reversal of 1669537672 is 2767359661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1669537679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1125043 + ... + 1126525.

It is an arithmetic number, because the mean of its divisors is an integer number (71794065).

Almost surely, 2^1669537672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669537672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723057560).

1669537672 is an abundant number, since it is smaller than the sum of its proper divisors (1776577448).

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

1669537672 is a wasteful number, since it uses less digits than its factorization.

1669537672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674 (or 2659 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 52.

The square root of 1669537672 is about 40859.9764072374. The cubic root of 1669537672 is about 1186.3115016028.

The spelling of 1669537672 in words is "one billion, six hundred sixty-nine million, five hundred thirty-seven thousand, six hundred seventy-two".