1105843649 has 2 divisors, whose sum is σ = 1105843650. Its totient is φ = 1105843648.

The previous prime is 1105843633. The next prime is 1105843691. The reversal of 1105843649 is 9463485011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1088538049 + 17305600 = 32993^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105843649 - 2⁴ = 1105843633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105843699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552921824 + 552921825.

It is an arithmetic number, because the mean of its divisors is an integer number (552921825).

Almost surely, 2^1105843649 is an apocalyptic number.

It is an amenable number.

1105843649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105843649 is an equidigital number, since it uses as much as digits as its factorization.

1105843649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1105843649 is about 33254.2275357585. The cubic root of 1105843649 is about 1034.1048524554.

The spelling of 1105843649 in words is "one billion, one hundred five million, eight hundred forty-three thousand, six hundred forty-nine".