2011901959 has 2 divisors, whose sum is σ = 2011901960. Its totient is φ = 2011901958.

The previous prime is 2011901951. The next prime is 2011901993. The reversal of 2011901959 is 9591091102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011901959 - 2³ = 2011901951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011901951) 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 as a sum of consecutive naturals, namely, 1005950979 + 1005950980.

It is an arithmetic number, because the mean of its divisors is an integer number (1005950980).

Almost surely, 2^2011901959 is an apocalyptic number.

2011901959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011901959 is an equidigital number, since it uses as much as digits as its factorization.

2011901959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 37.

The square root of 2011901959 is about 44854.2301126661. The cubic root of 2011901959 is about 1262.4153633292.

The spelling of 2011901959 in words is "two billion, eleven million, nine hundred one thousand, nine hundred fifty-nine".