1609646976 has 384 divisors, whose sum is σ = 5621391360. Its totient is φ = 432414720.

The previous prime is 1609646963. The next prime is 1609647029. The reversal of 1609646976 is 6796469061.

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

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, 11749180 + ... + 11749316.

It is an arithmetic number, because the mean of its divisors is an integer number (14639040).

Almost surely, 2^1609646976 is an apocalyptic number.

1609646976 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 1609646976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2810695680).

1609646976 is an abundant number, since it is smaller than the sum of its proper divisors (4011744384).

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

1609646976 is a wasteful number, since it uses less digits than its factorization.

1609646976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 1609646976 is about 40120.4059799998. The cubic root of 1609646976 is about 1171.9530474654.

The spelling of 1609646976 in words is "one billion, six hundred nine million, six hundred forty-six thousand, nine hundred seventy-six".