1650650656 has 48 divisors (see below), whose sum is σ = 3341784600. Its totient is φ = 802234368.

The previous prime is 1650650647. The next prime is 1650650657. The reversal of 1650650656 is 6560560561.

It can be written as a sum of positive squares in 4 ways, for example, as 1308992400 + 341658256 = 36180^2 + 18484^2 .

It is not an unprimeable number, because it can be changed into a prime (1650650657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180400 + ... + 189328.

Almost surely, 2^1650650656 is an apocalyptic number.

1650650656 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 1650650656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670892300).

1650650656 is an abundant number, since it is smaller than the sum of its proper divisors (1691133944).

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

1650650656 is a wasteful number, since it uses less digits than its factorization.

1650650656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9101 (or 9093 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 1650650656 is about 40628.2002554876. The cubic root of 1650650656 is about 1181.8210548856.

The spelling of 1650650656 in words is "one billion, six hundred fifty million, six hundred fifty thousand, six hundred fifty-six".