1008644650 has 96 divisors (see below), whose sum is σ = 2121582960. Its totient is φ = 354170880.

The previous prime is 1008644641. The next prime is 1008644657. The reversal of 1008644650 is 564468001.

1008644650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 24 ways, for example, as 772641 + 1007872009 = 879^2 + 31747^2 .

It is not an unprimeable number, because it can be changed into a prime (1008644657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1375684 + ... + 1376416.

Almost surely, 2^1008644650 is an apocalyptic number.

1008644650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1008644650 is an abundant number, since it is smaller than the sum of its proper divisors (1112938310).

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

1008644650 is a wasteful number, since it uses less digits than its factorization.

1008644650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1008644650 is about 31759.1663933423. The cubic root of 1008644650 is about 1002.8732863187.

The spelling of 1008644650 in words is "one billion, eight million, six hundred forty-four thousand, six hundred fifty".