2011637449 has 2 divisors, whose sum is σ = 2011637450. Its totient is φ = 2011637448.

The previous prime is 2011637437. The next prime is 2011637471. The reversal of 2011637449 is 9447361102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2009908224 + 1729225 = 44832^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011637449 - 2⁹ = 2011636937 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011631449) 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, 1005818724 + 1005818725.

It is an arithmetic number, because the mean of its divisors is an integer number (1005818725).

Almost surely, 2^2011637449 is an apocalyptic number.

It is an amenable number.

2011637449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011637449 is an equidigital number, since it uses as much as digits as its factorization.

2011637449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 2011637449 is about 44851.2814644130. The cubic root of 2011637449 is about 1262.3600365573.

The spelling of 2011637449 in words is "two billion, eleven million, six hundred thirty-seven thousand, four hundred forty-nine".