2011442309 has 8 divisors (see below), whose sum is σ = 2042864160. Its totient is φ = 1980061776.

The previous prime is 2011442297. The next prime is 2011442311. The reversal of 2011442309 is 9032441102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011442309 - 2⁸ = 2011442053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011442399) 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, 96287 + ... + 115299.

It is an arithmetic number, because the mean of its divisors is an integer number (255358020).

Almost surely, 2^2011442309 is an apocalyptic number.

It is an amenable number.

2011442309 is a deficient number, since it is larger than the sum of its proper divisors (31421851).

2011442309 is a wasteful number, since it uses less digits than its factorization.

2011442309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20659.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2011442309 is about 44849.1060000085. The cubic root of 2011442309 is about 1262.3192165935.

The spelling of 2011442309 in words is "two billion, eleven million, four hundred forty-two thousand, three hundred nine".