2011951873 has 2 divisors, whose sum is σ = 2011951874. Its totient is φ = 2011951872.

The previous prime is 2011951871. The next prime is 2011951901. The reversal of 2011951873 is 3781591102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1309860864 + 702091009 = 36192^2 + 26497^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011951873 - 2¹ = 2011951871 is a prime.

Together with 2011951871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2011951871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005975936 + 1005975937.

It is an arithmetic number, because the mean of its divisors is an integer number (1005975937).

Almost surely, 2^2011951873 is an apocalyptic number.

It is an amenable number.

2011951873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011951873 is an equidigital number, since it uses as much as digits as its factorization.

2011951873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 2011951873 is about 44854.7865115865. The cubic root of 2011951873 is about 1262.4258031486.

The spelling of 2011951873 in words is "two billion, eleven million, nine hundred fifty-one thousand, eight hundred seventy-three".