1755649849 has 2 divisors, whose sum is σ = 1755649850. Its totient is φ = 1755649848.

The previous prime is 1755649813. The next prime is 1755649853. The reversal of 1755649849 is 9489465571.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1312757824 + 442892025 = 36232^2 + 21045^2 .

It is an emirp because it is prime and its reverse (9489465571) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1755649849 - 2¹¹ = 1755647801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1755649793 and 1755649802.

It is not a weakly prime, because it can be changed into another prime (1755649859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 877824924 + 877824925.

It is an arithmetic number, because the mean of its divisors is an integer number (877824925).

Almost surely, 2^1755649849 is an apocalyptic number.

It is an amenable number.

1755649849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1755649849 is an equidigital number, since it uses as much as digits as its factorization.

1755649849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 58.

The square root of 1755649849 is about 41900.4755223613. The cubic root of 1755649849 is about 1206.3665903789.

The spelling of 1755649849 in words is "one billion, seven hundred fifty-five million, six hundred forty-nine thousand, eight hundred forty-nine".