1909656112 has 40 divisors (see below), whose sum is σ = 4553798816. Its totient is φ = 755467776.

The previous prime is 1909656103. The next prime is 1909656137. The reversal of 1909656112 is 2116569091.

It is an unprimeable number.

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, 654333 + ... + 657244.

Almost surely, 2^1909656112 is an apocalyptic number.

It is an amenable number.

1909656112 is an abundant number, since it is smaller than the sum of its proper divisors (2644142704).

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

1909656112 is a wasteful number, since it uses less digits than its factorization.

1909656112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311605 (or 1311599 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1909656112 is about 43699.6122637261. The cubic root of 1909656112 is about 1240.6569775607.

The spelling of 1909656112 in words is "one billion, nine hundred nine million, six hundred fifty-six thousand, one hundred twelve".