8193367961 has 2 divisors, whose sum is σ = 8193367962. Its totient is φ = 8193367960.

The previous prime is 8193367879. The next prime is 8193367969. The reversal of 8193367961 is 1697633918.

It is a happy number.

8193367961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4403118736 + 3790249225 = 66356^2 + 61565^2 .

It is a cyclic number.

It is not a de Polignac number, because 8193367961 - 2¹⁴ = 8193351577 is a prime.

It is not a weakly prime, because it can be changed into another prime (8193367969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4096683980 + 4096683981.

It is an arithmetic number, because the mean of its divisors is an integer number (4096683981).

Almost surely, 2^8193367961 is an apocalyptic number.

It is an amenable number.

8193367961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8193367961 is an equidigital number, since it uses as much as digits as its factorization.

8193367961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 8193367961 is about 90517.2246647012. The cubic root of 8193367961 is about 2015.9858821061.

The spelling of 8193367961 in words is "eight billion, one hundred ninety-three million, three hundred sixty-seven thousand, nine hundred sixty-one".