1689429588 has 144 divisors (see below), whose sum is σ = 4976455680. Its totient is φ = 436645440.

The previous prime is 1689429563. The next prime is 1689429607. The reversal of 1689429588 is 8859249861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3648645 + ... + 3649107.

It is an arithmetic number, because the mean of its divisors is an integer number (34558720).

Almost surely, 2^1689429588 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 1689429588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2488227840).

1689429588 is an abundant number, since it is smaller than the sum of its proper divisors (3287026092).

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

1689429588 is a wasteful number, since it uses less digits than its factorization.

1689429588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 845 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 60.

The square root of 1689429588 is about 41102.6713000506. The cubic root of 1689429588 is about 1191.0043983507.

The spelling of 1689429588 in words is "one billion, six hundred eighty-nine million, four hundred twenty-nine thousand, five hundred eighty-eight".