2113265549 has 2 divisors, whose sum is σ = 2113265550. Its totient is φ = 2113265548.

The previous prime is 2113265543. The next prime is 2113265551. The reversal of 2113265549 is 9455623112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2113240900 + 24649 = 45970^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113265549 - 2⁴ = 2113265533 is a prime.

Together with 2113265551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113265543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056632774 + 1056632775.

It is an arithmetic number, because the mean of its divisors is an integer number (1056632775).

Almost surely, 2^2113265549 is an apocalyptic number.

It is an amenable number.

2113265549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113265549 is an equidigital number, since it uses as much as digits as its factorization.

2113265549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 2113265549 is about 45970.2680979783. The cubic root of 2113265549 is about 1283.2699492542.

The spelling of 2113265549 in words is "two billion, one hundred thirteen million, two hundred sixty-five thousand, five hundred forty-nine".