1609246656 has 224 divisors, whose sum is σ = 5184648000. Its totient is φ = 487194624.

The previous prime is 1609246631. The next prime is 1609246657. The reversal of 1609246656 is 6566429061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609246657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850960 + ... + 852848.

It is an arithmetic number, because the mean of its divisors is an integer number (23145750).

Almost surely, 2^1609246656 is an apocalyptic number.

1609246656 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 1609246656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592324000).

1609246656 is an abundant number, since it is smaller than the sum of its proper divisors (3575401344).

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

1609246656 is a wasteful number, since it uses less digits than its factorization.

1609246656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1609246656 is about 40115.4166873535. The cubic root of 1609246656 is about 1171.8558843090.

The spelling of 1609246656 in words is "one billion, six hundred nine million, two hundred forty-six thousand, six hundred fifty-six".