1609320960 has 480 divisors, whose sum is σ = 6255849600. Its totient is φ = 394149888.

The previous prime is 1609320943. The next prime is 1609321009. The reversal of 1609320960 is 690239061.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 8086941 + ... + 8087139.

It is an arithmetic number, because the mean of its divisors is an integer number (13033020).

Almost surely, 2^1609320960 is an apocalyptic number.

1609320960 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 1609320960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3127924800).

1609320960 is an abundant number, since it is smaller than the sum of its proper divisors (4646528640).

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

1609320960 is an equidigital number, since it uses as much as digits as its factorization.

1609320960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 1609320960 is about 40116.3428043983. The cubic root of 1609320960 is about 1171.8739201270.

The spelling of 1609320960 in words is "one billion, six hundred nine million, three hundred twenty thousand, nine hundred sixty".