1811106449 has 2 divisors, whose sum is σ = 1811106450. Its totient is φ = 1811106448.

The previous prime is 1811106443. The next prime is 1811106481. The reversal of 1811106449 is 9446011181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1735972225 + 75134224 = 41665^2 + 8668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1811106449 - 2⁴ = 1811106433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1811106443) 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, 905553224 + 905553225.

It is an arithmetic number, because the mean of its divisors is an integer number (905553225).

Almost surely, 2^1811106449 is an apocalyptic number.

It is an amenable number.

1811106449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1811106449 is an equidigital number, since it uses as much as digits as its factorization.

1811106449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 1811106449 is about 42557.0963412684. The cubic root of 1811106449 is about 1218.9371844372.

The spelling of 1811106449 in words is "one billion, eight hundred eleven million, one hundred six thousand, four hundred forty-nine".