1705111849 has 27 divisors (see below), whose sum is σ = 2113126743. Its totient is φ = 1371588288.

The previous prime is 1705111847. The next prime is 1705111853. The reversal of 1705111849 is 9481115071.

It is a happy number.

The square root of 1705111849 is 41293.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1327509225 + 377602624 = 36435^2 + 19432^2 .

It is not a de Polignac number, because 1705111849 - 2¹ = 1705111847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1705111843) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4913694 + ... + 4914040.

Almost surely, 2^1705111849 is an apocalyptic number.

1705111849 is the 41293-rd square number.

1705111849 is the 20647-th centered octagonal number.

It is an amenable number.

1705111849 is a deficient number, since it is larger than the sum of its proper divisors (408014894).

1705111849 is an frugal number, since it uses more digits than its factorization.

1705111849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 37.

The cubic root of 1705111849 is about 1194.6782509422.

It can be divided in two parts, 17051 and 11849, that added together give a square (28900 = 170²).

The spelling of 1705111849 in words is "one billion, seven hundred five million, one hundred eleven thousand, eight hundred forty-nine".