1009640996 has 48 divisors (see below), whose sum is σ = 2178610560. Its totient is φ = 398684160.

The previous prime is 1009640993. The next prime is 1009641001. The reversal of 1009640996 is 6990469001.

1009640996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1009640993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223076 + ... + 227556.

It is an arithmetic number, because the mean of its divisors is an integer number (45387720).

Almost surely, 2^1009640996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009640996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1089305280).

1009640996 is an abundant number, since it is smaller than the sum of its proper divisors (1168969564).

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

1009640996 is a wasteful number, since it uses less digits than its factorization.

1009640996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124 (or 5122 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 1009640996 is about 31774.8484811494. The cubic root of 1009640996 is about 1003.2033926514.

The spelling of 1009640996 in words is "one billion, nine million, six hundred forty thousand, nine hundred ninety-six".