1371716617 has 4 divisors (see below), whose sum is σ = 1419017220. Its totient is φ = 1324416016.

The previous prime is 1371716561. The next prime is 1371716657. The reversal of 1371716617 is 7166171731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7166171731 = 131 ⋅54703601.

It can be written as a sum of positive squares in 2 ways, for example, as 974750841 + 396965776 = 31221^2 + 19924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1371716617 is a prime.

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 a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1371716617.

It is not an unprimeable number, because it can be changed into a prime (1371716657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23650258 + ... + 23650315.

It is an arithmetic number, because the mean of its divisors is an integer number (354754305).

Almost surely, 2^1371716617 is an apocalyptic number.

It is an amenable number.

1371716617 is a deficient number, since it is larger than the sum of its proper divisors (47300603).

1371716617 is an equidigital number, since it uses as much as digits as its factorization.

1371716617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47300602.

The product of its digits is 37044, while the sum is 40.

The square root of 1371716617 is about 37036.6928464192. The cubic root of 1371716617 is about 1111.1042272881.

The spelling of 1371716617 in words is "one billion, three hundred seventy-one million, seven hundred sixteen thousand, six hundred seventeen".