8173917793 has 2 divisors, whose sum is σ = 8173917794. Its totient is φ = 8173917792.

The previous prime is 8173917769. The next prime is 8173917799. The reversal of 8173917793 is 3977193718.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7006192209 + 1167725584 = 83703^2 + 34172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8173917793 is a prime.

It is not a weakly prime, because it can be changed into another prime (8173917799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4086958896 + 4086958897.

It is an arithmetic number, because the mean of its divisors is an integer number (4086958897).

Almost surely, 2^8173917793 is an apocalyptic number.

It is an amenable number.

8173917793 is a deficient number, since it is larger than the sum of its proper divisors (1).

8173917793 is an equidigital number, since it uses as much as digits as its factorization.

8173917793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000376, while the sum is 55.

The square root of 8173917793 is about 90409.7217836666. The cubic root of 8173917793 is about 2014.3893740917.

The spelling of 8173917793 in words is "eight billion, one hundred seventy-three million, nine hundred seventeen thousand, seven hundred ninety-three".