1009653644 has 12 divisors (see below), whose sum is σ = 1782530904. Its totient is φ = 500359104.

The previous prime is 1009653587. The next prime is 1009653649. The reversal of 1009653644 is 4463569001.

1009653644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1009653598 and 1009653607.

It is not an unprimeable number, because it can be changed into a prime (1009653649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116422 + ... + 1117325.

It is an arithmetic number, because the mean of its divisors is an integer number (148544242).

Almost surely, 2^1009653644 is an apocalyptic number.

It is an amenable number.

1009653644 is a deficient number, since it is larger than the sum of its proper divisors (772877260).

1009653644 is a wasteful number, since it uses less digits than its factorization.

1009653644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233864 (or 2233862 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1009653644 is about 31775.0475058654. The cubic root of 1009653644 is about 1003.2075817521.

The spelling of 1009653644 in words is "one billion, nine million, six hundred fifty-three thousand, six hundred forty-four".