2991385011 has 8 divisors (see below), whose sum is σ = 3994205904. Its totient is φ = 1991410400.

The previous prime is 2991384997. The next prime is 2991385049. The reversal of 2991385011 is 1105831992.

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 2991385011 - 2²⁷ = 2857167283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2991385081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709116 + ... + 713321.

It is an arithmetic number, because the mean of its divisors is an integer number (499275738).

Almost surely, 2^2991385011 is an apocalyptic number.

2991385011 is a deficient number, since it is larger than the sum of its proper divisors (1002820893).

2991385011 is a wasteful number, since it uses less digits than its factorization.

2991385011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423141.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 2991385011 is about 54693.5554795992. Note that the first 3 decimals coincide. The cubic root of 2991385011 is about 1440.8676951262.

The spelling of 2991385011 in words is "two billion, nine hundred ninety-one million, three hundred eighty-five thousand, eleven".