1009109656 has 16 divisors (see below), whose sum is σ = 1893330000. Its totient is φ = 504221664.

The previous prime is 1009109639. The next prime is 1009109669. The reversal of 1009109656 is 6569019001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28531 + ... + 53218.

It is an arithmetic number, because the mean of its divisors is an integer number (118333125).

Almost surely, 2^1009109656 is an apocalyptic number.

It is an amenable number.

1009109656 is a deficient number, since it is larger than the sum of its proper divisors (884220344).

1009109656 is a wasteful number, since it uses less digits than its factorization.

1009109656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83298 (or 83294 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 1009109656 is about 31766.4863653505. The cubic root of 1009109656 is about 1003.0273777354.

The spelling of 1009109656 in words is "one billion, nine million, one hundred nine thousand, six hundred fifty-six".