1609689060 has 144 divisors (see below), whose sum is σ = 5595408000. Its totient is φ = 366930432.

The previous prime is 1609689049. The next prime is 1609689077. The reversal of 1609689060 is 609869061.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1609688997 and 1609689015.

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, 526416 + ... + 529464.

It is an arithmetic number, because the mean of its divisors is an integer number (38857000).

Almost surely, 2^1609689060 is an apocalyptic number.

1609689060 is a gapful number since it is divisible by the number (10) 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 1609689060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2797704000).

1609689060 is an abundant number, since it is smaller than the sum of its proper divisors (3985718940).

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

1609689060 is a wasteful number, since it uses less digits than its factorization.

1609689060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490 (or 3485 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1609689060 is about 40120.9304478348. The cubic root of 1609689060 is about 1171.9632608937.

The spelling of 1609689060 in words is "one billion, six hundred nine million, six hundred eighty-nine thousand, sixty".