2011209648 has 40 divisors (see below), whose sum is σ = 5937858048. Its totient is φ = 574631232.

The previous prime is 2011209643. The next prime is 2011209671. The reversal of 2011209648 is 8469021102.

It is not an unprimeable number, because it can be changed into a prime (2011209643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992536 + ... + 2993207.

Almost surely, 2^2011209648 is an apocalyptic number.

2011209648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2011209648 is an abundant number, since it is smaller than the sum of its proper divisors (3926648400).

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

2011209648 is a wasteful number, since it uses less digits than its factorization.

2011209648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985761 (or 5985755 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 2011209648 is about 44846.5121051794. The cubic root of 2011209648 is about 1262.2705444252.

The spelling of 2011209648 in words is "two billion, eleven million, two hundred nine thousand, six hundred forty-eight".