1741261666 has 4 divisors (see below), whose sum is σ = 2611892502. Its totient is φ = 870630832.

The previous prime is 1741261597. The next prime is 1741261679. The reversal of 1741261666 is 6661621471.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6661621471 = 50683 ⋅131437.

It can be written as a sum of positive squares in only one way, i.e., 1081028641 + 660233025 = 32879^2 + 25695^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435315415 + ... + 435315418.

Almost surely, 2^1741261666 is an apocalyptic number.

1741261666 is a deficient number, since it is larger than the sum of its proper divisors (870630836).

1741261666 is an equidigital number, since it uses as much as digits as its factorization.

1741261666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870630835.

The product of its digits is 72576, while the sum is 40.

The square root of 1741261666 is about 41728.4275524492. The cubic root of 1741261666 is about 1203.0620101916.

The spelling of 1741261666 in words is "one billion, seven hundred forty-one million, two hundred sixty-one thousand, six hundred sixty-six".